the fragrancing substance can be chosen from a large number of odoriferous compounds nonlimiting examples of these are the substances belonging to the following families aromatic terpene and or sesquiterpene hydrocarbons in particular essential oils containing these molecules and more particularly essential oils of citrus fruit lemon orange grapefruit bergamot nutmeg etc cyclic or acyclic saturated or unsaturated primary secondary or tertiary nonaromatic alcohols and more particularly linalool citronellol geraniol nerol dihydromyrcenol terpineol and fatty alicyclic alcohols whose chain contains from 4 to 10 carbon atoms aldehydes and more particularly saturated and unsaturated alicyclic fatty aldehydes whose carbon chain contains from 4 to 12 carbon atoms aromatic aldehydes such as cinnamaldehyde alpha amylcinnamaldehyde and alpha hexylcinnamaldehyde lilial and phenolic aromatic aldehydes such as vanillin and ethylvanillin phenols and more particularly aromatic phenols such as eugenol and isoeugenol as well as methylethers thereof carboxylic acid esters in particular the acetic esters of benzyl alcohol geraniol citronellol nerol terpineol borneol or linalool aromatic acid esters such as benzoates and salicylates as well as cinnamates esterified with alcohols of the aliphatic series containing a chain of 1 to 6 carbon atoms aromatic phenol acids mainly in their lactone aromatic form such as coumarin and dihydrocoumarin carboxylic alcohol acids in their lactone form and more particularly the gamma octa gamma undeca and gamma dodeca lactones and the delta deca delta undeca and delta dodeca lactones in their saturated or unsaturated form macrocyclic compounds in which the carbon chain contains from 12 to 16 carbon atoms aromatic and or nonaromatic ethers and acetals in their acyclic or cyclic form and more particularly aldehyde acetals containing a carbon chain of 4 to 10 carbon atoms as well as substituted furan and substituted or unsubstituted pyran cyclic ethers heterocyclic compounds containing a.