FR3111078A1 - Volatile composition configured to eliminate the perception of an unwanted odor - Google Patents

Abstract

Volatile composition, in particular intended to be diffused in the passenger compartment of a motor vehicle, configured to eliminate the perception by a person of an undesirable odor (BS_i), the said composition being capable of releasing a number N of remedial odors (R_i,j) , where j=1, 2…N) of the undesirable odor (BS_i), the undesirable odor (BS_i) and the remedial odors being each associated with an archetype cell in an odor map characterized in that: N is greater than or equal to 3, each remedial odor (R_i,j) is positioned in a cell (O_i,j) in the odor map and separated from the cell (O_i) of the undesirable odor (BS_i) of at plus an intermediate cell in the odor mapping. Figure of the abstract: Figure 2

Description

Volatile composition configured to eliminate the perception of an undesirable odor

The present invention relates to a volatile composition, in particular intended to be diffused in the passenger compartment of a motor vehicle, and configured to eliminate the perception of one or more undesirable odors that a passenger is likely to have inside this cabin.

The passenger compartment of a motor vehicle is a closed environment whose small volume promotes the formation and persistence of undesirable odors that can be a source of discomfort for the user. These odors can, for example, come from ventilation systems, cold tobacco, or even foodstuffs.

The uses associated with the field of mobility are undergoing profound upheavals, so that vehicles are more strongly and more quickly subjected to bad odors. The emergence of ever more competitive services associated with mobility (car sharing, carpooling, autonomous car, etc.) is accompanied by increased user demand, while the use of shared vehicles is intensifying. It is therefore important not to leave unpleasant odors in motor vehicles that could inconvenience passengers.

Methods for characterizing and manufacturing fragrant compositions are known.

Patent application US2014221269 describes a method for defining a composition of odorous molecules from a multidimensional vector system. This method makes it possible to compare this composition to any other composition of odorous molecules.

Patent application WO0015269 describes a method for classifying odors from a multi-dimensional vector matrix.

Finally, patent application US2014221269 defines an odorant composition comprising at least 20 odorant components, each of these components being characterized by a multi-dimensional vector which is itself compared to the multi-dimensional vectors of the odorant components of an odorant composition of reference. To compare the two compositions, we introduce a “distance”, denoted z, measured between each vector from one composition to another, z being less than or equal to 2.

The methods for characterizing and manufacturing the fragrant compositions mentioned above are complicated to implement. In addition, these methods do not propose to define an odorous composition capable of neutralizing olfactory perception in a vehicle interior since one or more odors are added to the odor or odors that one wishes to mask. Finally, it may turn out that the mixture of odors is even more unpleasant than the odor to be masked.

The present invention aims to improve the situation by proposing to define a volatile composition, in particular composed of odorous molecules, from characteristics that are simple to define, the volatile composition according to the invention making it possible to eliminate the perception of one or more undesirable odors. .

The subject of the invention is a volatile composition, in particular intended to be diffused in the passenger compartment of a motor vehicle, configured to eliminate the perception by a person of an undesirable odor (BS_i), said composition being capable of releasing a number N of remediating odors (R_i,j), where j=1, 2…N) of the undesirable odor (BS_i), the undesirable odor (BS_i) and the remediating odors being each associated with an archetype cell in a mapping of smells.

• N est supérieur ou égal à 3,
• chaque odeur remédiante (R_i,j) est positionnée dans une cellule (O_i,j) dans la cartographie d’odeurs et séparée de la cellule (O_i) de l’odeur indésirable (BS_i) d’au plus une cellule intermédiaire dans la cartographie d’odeurs.

According to the invention:

• N is greater than or equal to 3,
• each remedial odor (R_i,j) is positioned in a cell (O_i,j) in the odor map and separated from the cell (O_i) of the undesirable odor (BS_i) by at most one intermediate cell in the map of smells.

By the term "undesirable odor", we mean a wide range of odors, an odor perceived as bothersome for some that may be perceived as pleasant for others. The undesirable odor is therefore associated with the perception of one or more individuals, in particular the passenger(s) of a vehicle. Advantageously, the invention aims to eliminate the perception of odors perceived as unpleasant for the majority of us, in particular the smell of cold tobacco.

The volatile composition may further comprise one or more of the following characteristics, taken separately or in combination.

According to one of the aspects of the invention, N is greater than or equal to 4.

According to one of the aspects of the invention, N is greater than or equal to 5.

According to a preferred embodiment, the intensity (I_i,j) of each remedial odor (R_i,j) is less than or equal to the intensity (I_i) of the undesirable odor (BS_i), and the sum of the intensities Σ (I_i,j) of the N remedial odors (R_i,j) is greater than the intensity I_i of the undesirable odor (BS_i).

According to one of the aspects of the invention, one of the remedial odors (R_i,j) is located in the same cell (O_i) as the undesirable odor (BS_i).

Alternatively or in addition, one or more remedial odors (R_i,j) are located in a cell adjacent to the cell (O_i) of the undesirable odor (BS_i).

According to another aspect of the invention, the composition is configured to eliminate the perception by a person of several undesirable odors (BS_i, where i = 1, 2, 3…). This composition is then capable of releasing a number N of remedial odors (R_i,j), where j=1, 2…N) for each of said undesirable odors (BS_i).

Thus, the volatile composition is able to target a particular undesirable odor, or a broader panel of undesirable odors, using an appropriate choice of remedial odors. The volatile composition is therefore composed of one or more sets of remedial odors for each of the undesirable odors identified.

According to a variant embodiment, some of the undesirable odors (BS_i) have one or more remedial odors (R_i,j) in common.

According to an alternative, the undesirable odors (BS_i) have no remedial odor (R_i,j) in common.

According to another aspect of the invention, each of the remedial odors (R_i,j) reveals successively over time a remedial head odor (R_i,j, head), a remedial heart odor (R_i,j, heart) and a background remedial odor (R_i,j, background), each of these odors being respectively associated with a head odor (BS_i, head), a heart odor (BS_i, heart) and a background odor (BS_i, background ) of the undesirable odor (BS_i).

According to an alternative, the remediating odors (R_i,j) of the undesirable odor (BS_i) are chosen from one of the head, heart or background odors of the undesirable odor (BS_i). Advantageously, the remedial odors (R_i,j) of the undesirable odor (BS_i) are chosen only from one of the background odors of the undesirable odor (BS_i).

According to one aspect of the invention, a signature odor is added to the volatile composition, this odor being configured to give a predetermined olfactory atmosphere in the passenger compartment. This signature scent can be customized based on the person's preferences.

• chaque odeur signature (S_k) est positionnée dans une cellule (O_k) dans la cartographie d’odeurs et séparée de la cellule (O_i) de chaque odeur indésirable (BS_i) d’au moins deux cellules intermédiaires dans la cartographie d’odeurs,
• il n’existe pas au moins trois odeurs remédiantes de l’odeur signature (S_k) à moins de deux cellules de distance de la cellule (O_k).

It is possible to add one or more signature odors (S_k, where k=1,2,3…) with a volatile composition. Each of these signature scents verifies the following conditions:

• each signature odor (S_k) is positioned in a cell (O_k) in the odor map and separated from the cell (O_i) of each undesirable odor (BS_i) by at least two intermediate cells in the odor map,
• there are not at least three remedial odors of the signature odor (S_k) within two cells distance of the cell (O_k).

Alternatively, the signature odor is chosen from one of said remedial odors (R_i,j) of the undesirable odor (BS_i). The intensity (I_i,j) of said signature odor (R_i,j) is then chosen such that its intensity (I_i,j) is greater than the intensity (I_i) of the undesirable odor (BS_i).

The invention also relates to a method for eliminating the perception by a person of an undesirable odor (BS_i), in particular within the passenger compartment of a motor vehicle, this method comprising the step of diffusing into this passenger compartment a volatile composition as previously defined.

According to one of the aspects of the invention, the method further comprises the step of diffusing into the passenger compartment a signature odor configured to give a predetermined olfactory atmosphere which can be personalized according to the preferences of the person.

It is understood that all the characteristics and configurations above are in no way limiting. Other characteristics, details and advantages of the invention will emerge more clearly on reading the detailed description given below, and several examples of embodiment given by way of indication and not limitation with reference to the appended schematic drawings, in which:

There is a schematic representation of an odor map according to the prior art;

There is a schematic representation which shows how to position in a map of odors with 52 cells of archetype a volatile composition according to an embodiment of the invention;

There is a schematic representation which shows how to position in a map of odors with 52 cells of archetype a volatile composition according to another embodiment of the invention;

There shows an example of the positioning of the top, heart and bottom odors of a blond cigarette butt in the odor map according to the ;

There is a schematic representation which shows how to position in a map of odors with 52 cells of archetype a volatile composition according to another embodiment of the invention;

There shows an example of the positioning of the odors of a blond cigarette butt and a commercial air freshener in the odor map according to the ;

The figures , are schematic representations that show how to position in a 52-cell odor map of an archetype a volatile composition according to different embodiments of the invention;

There shows an example of the positioning of the odors of a blond cigarette butt and of a volatile composition according to the invention in the cartography of odors according to the .

In these figures, identical elements bear the same references.

The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference is to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments can also be combined or interchanged to provide other embodiments.

The present invention relates to a volatile composition configured to eliminate a person's perception of one or more undesirable odors. This composition is itself capable of giving off remedial odors for each of the undesirable odors identified, for example in a motor vehicle. To stand out from the prior art as previously defined, it is proposed to adopt a simplifying approach by characterizing the volatile composition by the positioning of the remedial odors associated with it in a map of odors as presented in section .

There represents an example of two-dimensional (2D) odor mapping that can be found in the literature relating to the field of olfaction. Three-dimensional models exist, but we will limit ourselves to the 2D model in the context of this description. To meet the need to describe the odors encountered in the perfume industry, Jean-Noël Jaubert and a panel of experts in the chemistry of perfumes and aromas have developed a communication tool on odors, so as to categorize them according to a systematic and simplified approach. The field of odors® thus developed is an example of odor mapping as represented on the .

The field of odors® makes it possible to apprehend the human perception of the odors of an odorous substance in a 2D classification model. The field of odors is the result of research on the relationship between the chemical structure and the odorous character of molecules and is based on a significant sample of common odorant molecules used in perfumery and in the aromatic industry. A total of 1396 odorous compounds were retained.

An inventory of the terms most used in the literature in the field of perfumery and aromas has been produced. The aim was to constitute a repository composed of archetypes, whether the latter were semantic (for example: sulphur, caramel, floral, etc.) or molecular (for example: methyl disulphide, citral, coumarin, etc.). In total, 64 elementary descriptors were selected.

The comparison of the sample of 1396 odorous compounds with the 64 elementary descriptors made it possible to extract 41 semantic archetypes used to map the field of odors®. In order to mark out the 2D space of the odor field®, the 41 archetypes have themselves been grouped into 9 families, namely 6 poles and 3 dominants (for the sake of simplification, the poles and dominants have not been shown in the figures).

As seen on the , the odors perceived as being close by a majority of the population (for example, caramel and vanilla, or even green and fresh) are positioned in contiguous archetype cells within the odor map 1.

Odor mapping 1 therefore makes it possible to position any odorous note on a two-dimensional map by applying the brain's natural classification method, namely positioning odorous notes on a map in relation to reference odorous notes. This categorization method is used as a principle for characterizing the volatile composition as defined in the invention.

In the remainder of the description, the generic term odor mapping will designate either the field of odors® as described above, a wheel of odors, and more generally any representation based on the principle of categorization described by the field of odors. smells®.

By choosing an odor map as a reference, it is possible to position an undesirable odor perceived by a person, for example the passenger of a vehicle, in the archetype cell that corresponds to this undesirable odor. It is then possible to define a set of remedial odors of this undesirable odor in order to eliminate the perception that this person has of this undesirable odor, by applying the principles of the invention as detailed below.

In the remainder of the description, we will consider, by way of non-limiting example, that the person perceiving the undesirable odors is in a vehicle interior.

There is a schematic representation of an odor map 1 with, by way of example, 52 cells of archetypes numbered from O1 to O52. The number of archetypal cells used to describe the odorous compositions is chosen arbitrarily and is not a limiting characteristic of the invention.

An undesirable odor BS, diffused in the passenger compartment of a motor vehicle, is positioned in the cell corresponding to its archetype in the odor map 1, namely the cell of archetype O21. For example, the unwanted odor may come from a cigarette butt.

The object of the present invention is to design a volatile composition intended to be diffused in this passenger compartment and configured to eliminate the perception by a person of this undesirable odor BS, said composition being capable of releasing a number N of remedial odors (R_i, j), where j=1, 2…N) of the undesirable odor BS_i (on the example of the , there is only an undesirable smell and BS = BS_i). The invention is based on the principle of abstraction, namely that the brain of a human being can no longer distinguish odors from each other when they are sufficiently close within the odor map 1.

• N est supérieur ou égal à 3,
• chaque odeur remédiante (R_i,j) est positionnée dans une cellule (O_i,j) dans la cartographie d’odeurs et séparée de la cellule (O_i) de l’odeur indésirable (BS_i) d’au plus une cellule intermédiaire dans la cartographie d’odeurs.

In order for the principle of abstraction to be able to apply, the volatile composition according to the invention must satisfy the criteria below:

• N is greater than or equal to 3,
• each remedial odor (R_i,j) is positioned in a cell (O_i,j) in the odor map and separated from the cell (O_i) of the undesirable odor (BS_i) by at most one intermediate cell in the map of smells.

In the example shown in the , the number N of remedial odors is chosen equal to 4, which makes it possible to verify the first condition of the principle of abstraction defined above.

Each remedial odor (R1, R2, R3, R4) is positioned in an archetype cell (O13, O14, O21, O32 respectively associated with R1, R2, R3 and R4) of the odor map. Each of the archetype cells (O13, O14, O21, O32) is separated from the cell O21 of the undesirable odor BS by at most one intermediate cell in the odor mapping of the example of the , which makes it possible to fulfill the second condition of the principle of abstraction defined above.

According to this example, the remedial odor R3 is located in the same cell O21 as the undesirable odor BS. The remedial odors R2 and R4 are located in an adjacent cell (O14 and O32, respectively associated with R2 and R4) to cell O21 of the undesirable odor BS. The remedial odor R1 is positioned in a cell O13 two cells away from cell O21.

The set of remedial odors (R1, R2, R3, R4), defined by the field of remedial odors (the remediation zone is defined by the shaded part on the ) is therefore associated with the remediation of the undesirable odor BS.

Once the remedial odors of the undesirable odor have been identified, it is then a question of selecting a set of appropriate chemical compounds giving off each of these remedial odors, so as to design the volatile composition according to the invention.

We define the intensity I of an odor as the evaluation of the perception of this odor by an individual. The intensity is measured by evaluating the average intensity of the odor perceived by a jury panel. This intensity is discretized on a scale of 0 to 10, where 0 does not smell and 10 smells extremely strong. Several intensity scales exist, for example that between 0 and 5. Another method of determining the intensity consists in using a reference odor whose concentration is known, for example the odor of n-butanol. We then evaluate the concentration of n-butanol which will provide the same intensity of odor perception as the odorous sample. The intensity of the different odors evaluated is then transposed into concentrations of n-butanol.

Advantageously, the volatile composition can be defined so that the intensity (I1, I2, I3, I4) of each remedial odor (respectively R1, R2, R3, R4) is less than or equal to the intensity I of the undesirable odor BS, and the sum of the intensities (I1+I2+I3+I4) of the 4 remedial odors (R1, R2, R3, R4) is greater than the intensity I of the undesirable odor BS.

To be completely effective in certain situations, the volatile composition defined according to the criteria of the invention must be able to remedy not a single undesirable odor but several. Indeed, it is rare for a single undesirable odor to be perceived by the passenger of a vehicle. Moreover, the volatile chemical compositions are often complex and can give rise to several odors perceived within the same passenger compartment.

On the example of the , two undesirable odors BS1 and BS2 are represented, respectively in the archetype cells O21 and O26 of the odor map 1. The volatile composition described on the is configured to eliminate the perception by a person of the undesirable odors BS1 (i = 1) and BS2 (i = 2), this composition being capable of releasing a number N of remedial odors (R_i,j), where j=1, 2…N) for each of the undesirable odors BS1 and BS2.

• N est supérieur ou égal à 3,
• chaque odeur remédiante (R_i,j) est positionnée dans une cellule (O_i,j) dans la cartographie d’odeurs et séparée de la cellule (O_i) de l’odeur indésirable (BS_i) d’au plus une cellule intermédiaire dans la cartographie d’odeurs.

The criteria previously defined for the volatile composition according to the invention apply for each set of remedial odors, namely:

• N is greater than or equal to 3,
• each remedial odor (R_i,j) is positioned in a cell (O_i,j) in the odor map and separated from the cell (O_i) of the undesirable odor (BS_i) by at most one intermediate cell in the map of smells.

All of the N=4 remedial odors (R(1.1), R(1.2), R(1.3), R(1.4)) are associated with the remediation of the undesirable odor BS1. The set of N=4 remedial odors (R(2,1), R(2,2), R(2,3), R(2,4)) is associated with the remediation of the odor undesirable BS2.

In the example shown, the undesirable odors BS1 and BS2 have no remedial odor in common. According to an example not illustrated, it is possible to define a volatile composition according to the invention such that some of the undesirable odors (BS_i) have one or more remedial odors (R_i,j) in common.

For the remediation to work, the volatile composition must therefore be configured in such a way as to release odors that remedy each of the undesirable odors perceived. The set of odors remediating the undesirable odor BS1 must not interact with the set of odors remediating the undesirable odor BS2. In other words, the effects of a set of remedial odors (R(1,1), R(1,2), R(1,3), R(1,4), associated with the undesirable odor BS1) must not negate the effects of another set of remedial odors (R(2,1), R(2,2), R(2,3), R(2,4), associated with the undesirable odor BS2). On the contrary, the effects of each set of remedial odors defining the volatile composition must be able to be superimposed according to a so-called principle of superposition. The application of this principle is particularly well illustrated on the example of the since the remediation zones ZR1 and ZR2, respectively associated with the undesirable odors BS1 and BS2, have no archetype cell in common.

The odorous components diffuse more or less quickly depending on their volatility. The smell of an odorous composition will therefore vary over time. In sensory analysis, three time intervals are defined. The same odorous component will therefore have three odors depending on its aging: the head odor, the heart odor and the base odor. The head odor is made up of the lightest and most volatile raw materials. It disappears in a few minutes and does not last. The heart odor is the most pronounced and can be perceived longer, between 2 and 8 hours. Finally, the background odor is made up of the heaviest raw materials. It is persistent and can be seen for several days.

As the odor to be eliminated evolves over time, its position in an odor map can be detailed according to head, heart and background odors. For example, the shows how to position in an odor map 1 according to the , the head, heart and bottom odors of a blond cigarette butt.

Head odor (symbolized by diamonds on the ) of the blond cigarette is honeyed and vanilla. Its heart scent (symbolized by circles on the ) is coumarinated, woody and amber. Its background odor (symbolized by rectangles on the ) is grilled, baked and phenolized.

According to one embodiment of the invention, the volatile composition according to the invention is composed of remedial odors (R_i,j) revealing successively over time a remedial head odor (R_i,j, head), a heart odor (R_i,j, heart) and a background remedial odor (R_i,j, background), each of these odors being respectively associated with a head odor (BS_i, head), a heart odor (BS_i, heart ) and a background odor (BS_i, background) of the unwanted odor (BS_i).

The remedial top, middle and bottom odors must satisfy the criteria mentioned below with respect to the top, middle and bottom odors of the undesirable odor (BS_i), respectively:
- N is greater than or equal to 3,
- each remedial odor (R_i,j) is positioned in a cell (O_i,j) in the odor map and separated from the cell (O_i) of the undesirable odor (BS_i) by at most one intermediate cell in the odor mapping.

The example shown on the has a volatile composition comprising:
- N= 4 remedial head odors (R(1,1,head), R(1,2,head), R(1,3,head), R(1,4,head)) respectively positioned in cells of archetypes (O13, O19, O28 and O21) adjacent to the cell of archetype O20 of the head odor (BS1, head) of the undesirable odor BS1,
- N= 4 heart remedial odors (R(1,1, heart), R(1,2, heart), R(1,3, heart), R(1,4, heart)) respectively positioned in cells of archetypes (O33, O35, O42 and O43) adjacent to or common to the cell of archetype O43 of the heart odor (BS1, heart) of the undesirable odor BS1,
- N= 4 background remedial odors (R(1,1, background), R(1,2, background), R(1,3, background), R(1,4, background)) respectively positioned in cells of archetypes (O17, O47, O37 and O27) adjacent to the cell of archetype O26 of the background odor (BS1, background) of the undesirable odor BS1.

Thus, advantageously, the volatile composition can be configured so as to accompany the evolution over time of the perception of the undesirable odor. For this, it must be composed of remediating odors having the same characteristic of head, heart and bottom odors as those of the undesirable odor to which they remedy.

We positioned on the the top, middle and bottom odors of a commercially available green apple air freshener. The top, heart and background odors are respectively symbolized by diamonds, circles and rectangles. The smells relating to a commercial blond cigarette have also been positioned in their archetype cells and symbolized by crosses. It is known that this type of air freshener, generally made of felt impregnated with an odorous substance, diffuses a particularly heady and persistent odor over time, generally to mask the smell of cigarettes without, however, managing to eliminate the perception thereof.

It is found that the top, middle and bottom odors of the deodorant are located in cells of archetypes which do not allow them to fulfill the conditions as previously defined for the volatile composition according to the invention.

It is noted in particular that the background odors and those associated respectively with the odors of blond cigarette and green apple-scented air freshener are very far from each other in the odor map 1 represented on the .

The present invention therefore differs from certain solutions offered on the market, for example the air fresheners mentioned above, which only mask the undesirable odor by adding one or more odors to the passenger compartment. It may even turn out that the mixture of odors (deodorant and the smell of cold tobacco) is even more unpleasant than the odor whose perception you want to eliminate.

There illustrates another characteristic according to the invention which this time consists in using only remedial odors for the volatile composition having as background odor characteristic to cover the evolution over time of the odor to be eliminated.

There illustrates an embodiment of the invention which consists in adding to the volatile composition of the previously described five signature odors (S1 to S5) configured to give a predetermined olfactory atmosphere according to the preferences of the passenger. It should be noted that the remediating background odor R(1,1, background) associated with the cell of archetype O13 and making it possible to remedy the head odor (BS1, head) is not the same as the remedial background odor R(1,1, background) associated with the cell of archetype O33 and allowing to remedy the heart odor (BS1, heart) and that it is also not identical to the remedial background odor R(1,1, background) associated with the cell of archetype O17 and making it possible to remedy the background odor (BS1, background). Indeed, an odor remains defined by its archetype cell within the odor mapping.

• chaque odeur signature S_k est positionnée dans une cellule O_k dans la cartographie d’odeurs 1 et séparée de la cellule O21 de l’odeur indésirable BS d’au moins deux cellules intermédiaires dans la cartographie d’odeurs,
• il n’existe pas au moins trois odeurs remédiantes de l’odeur signature S_k à moins de deux cellules de distance de la cellule O_k.

Each of the signature odors of the volatile composition thus defined verifies the following conditions:

• each signature odor S_k is positioned in a cell O_k in the odor map 1 and separated from the cell O21 of the undesirable odor BS by at least two intermediate cells in the odor map,
• there are not at least three remedial odors of the signature odor S_k within two cells of cell O_k.

There shows an example of the positioning of the odors of a blond cigarette butt (top, heart and bottom odors, respectively symbolized by diamonds, circles and rectangles) and of a volatile composition according to the invention (odors symbolized by crosses within the archetype cells) in an odor map 1. The remedial odors chosen respect the conditions mentioned above, namely: N is greater than or equal to 3, and each remedial odor is positioned in a cell in the odor map and separated from the cell of the undesirable odor by at most one intermediate cell in the odor map 1.

Claims (11)

Volatile composition, in particular intended to be diffused in the passenger compartment of a motor vehicle, configured to eliminate the perception by a person of an undesirable odor (BS_i), the said composition being capable of releasing a number N of remedial odors (R_i,j) , where j=1, 2…N) of the undesirable odor (BS_i),
the undesirable odor (BS_i) and the remedial odors being each associated with an archetype cell in an odor map,
characterized in that:

• N is greater than or equal to 3,
• each remedial odor (R_i,j) is positioned in a cell (O_i,j) in the odor map and separated from the cell (O_i) of the undesirable odor (BS_i) by at most one intermediate cell in the map of smells.

Composition according to Claim 1, in which the intensity (I_i,j) of each remedial odor (R_i,j) is less than or equal to the intensity (I_i) of the undesirable odor (BS_i), and the sum of the intensities Σ(I_i,j) of the N remedial odors (R_i,j) is greater than the intensity I_i of the undesirable odor (BS_i). Composition according to Claim 1 or 2, in which one of the said remedial odors (R_i,j) is located in the same cell (O_i) as the undesirable odor (BS_i). Composition according to one of the preceding claims, in which one or more remedial odors (R_i,j) are located in a cell adjacent to the cell (O_i) of the undesirable odor (BS_i). Composition according to one of the preceding claims, said composition being configured to eliminate the perception by a person of several undesirable odors (BS_i, where i = 1, 2, 3, etc.), said composition being capable of releasing a number N of odors remedies (R_i,j), where j=1, 2…N) for each of said undesirable odors (BS_i). Composition according to one of the preceding claims, in which each of the said remedial odors (R_i,j) reveals successively over time a remedial head odor (R_i,j, head), a remedial heart odor (R_i,j, heart) and a remedial background odor (R_i,j, background), each of these odors being respectively associated with a head odor (BS_i, head), a heart odor (BS_i, heart) and a background odor (BS_i , background) of the undesirable odor (BS_i). Composition according to one of Claims 1 to 5, in which the remedial odors (R_i,j) of the undesirable odor (BS_i) are chosen from one of the top, middle or bottom odors of the said undesirable odor (BS_i) , and advantageously only from one of the background odors of said undesirable odor (BS_i). Composition according to one of the preceding claims, in which is added a signature odor configured to give a predetermined olfactory atmosphere which can be personalized according to the preferences of the person. Composition according to the preceding claim, in which one or more signature odors are added (S_k, where k=1,2,3, etc.) and in which each of the signature odors satisfies the following conditions:

• each signature odor (S_k) is positioned in a cell (O_k) in the odor map and separated from the cell (O_i) of each undesirable odor (BS_i) by at least two intermediate cells in the odor map,
• there are not at least three remedial odors of the signature odor (S_k) within two cells distance from the cell (O_k).

Process for eliminating the perception by a person of an undesirable odor (BS_i), in particular within the passenger compartment of a motor vehicle, this process comprising the step of diffusing into this passenger compartment a volatile composition according to any one of the preceding claims . Method according to the preceding claim, further comprising the step of diffusing into the passenger compartment a signature odor configured to give a predetermined olfactory atmosphere which can be personalized according to the preferences of the person.