Solvent composition comprising: a) at least 50% and preferably at least 70%, and most preferably at least 80% by weight of at least one oxide of an organic sulfide of general formula: in which - X and Y, which may be identical or different, are chosen, independently of each other, from oxygen, sulfur, -SO-, -SO 2 -, -NH- and -NR"-; - a and b, which may be identical or different, represent, independently of each other, 0 or 1; n is equal to 1 or 2; - R, R' and R", which may be identical or different, are chosen, independently of each other, from a linear or branched alkyl radical containing from 1 to 12 carbon atoms, a linear or branched alkenyl radical containing from 2 to 12 carbon atoms, and an aryl radical containing from 6 to 10 carbon atoms; R, R' and R" possibly being substituted with radicals chosen from alkyl, alkenyl, aryl and halogen, and possibly containing one or more heteroatoms chosen from O, S, N, P and Si; R and R' also possibly forming, together with the atoms that bear them, a hydrocarbon-based cyclic structure optionally containing one or more heteroatoms chosen from O, S and N, said cyclic structure comprising in total 5, 6, 7, 8 or 9 ring members; and b) from 10 ppm to 2%, preferably from 10 ppm to 1%, by weight relative to the total weight of the composition, of at least one odor-masking agent comprising at least one compound chosen from monoesters, diesters and/or triesters, alcohols, aldehydes, ketones and terpenes. a) at least 50% and preferably at least 70%, and most preferably at least 80% by weight of at least one oxide of an organic sulfide of general formula: in which - X and Y, which may be identical or different, are chosen, independently of each other, from oxygen, sulfur, -SO-, -SO 2 -, -NH- and -NR"-; - a and b, which may be identical or different, represent, independently of each other, 0 or 1; n is equal to 1 or 2; - R, R' and R", which may be identical or different, are chosen, independently of each other, from a linear or branched alkyl radical containing from 1 to 12 carbon atoms, a linear or branched alkenyl radical containing from 2 to 12 carbon atoms, and an aryl radical containing from 6 to 10 carbon atoms; R, R' and R" possibly being substituted with radicals chosen from alkyl, alkenyl, aryl and halogen, and possibly containing one or more heteroatoms chosen from O, S, N, P and Si; R and R' also possibly forming, together with the atoms that bear them, a hydrocarbon-based cyclic structure optionally containing one or more heteroatoms chosen from O, S and N, said cyclic structure comprising in total 5, 6, 7, 8 or 9 ring members; and - X and Y, which may be identical or different, are chosen, independently of each other, from oxygen, sulfur, -SO-, -SO 2 -, -NH- and -NR"-; - a and b, which may be identical or different, represent, independently of each other, 0 or 1; n is equal to 1 or 2; - R, R' and R", which may be identical or different, are chosen, independently of each other, from a linear or branched alkyl radical containing from 1 to 12 carbon atoms, a linear or branched alkenyl radical containing from 2 to 12 carbon atoms, and an aryl radical containing from 6 to 10 carbon atoms; R, R' and R" possibly being substituted with radicals chosen from alkyl, alkenyl, aryl and halogen, and possibly containing one or more heteroatoms chosen from O, S, N, P and Si; R and R' also possibly forming, together with the atoms that bear them, a hydrocarbon-based cyclic structure optionally containing one or more heteroatoms chosen from O, S and N, said cyclic structure comprising in total 5, 6, 7, 8 or 9 ring members; and b) from 10 ppm to 2%, preferably from 10 ppm to 1%, by weight relative to the total weight of the composition, of at least one odor-masking agent comprising at least one compound chosen from monoesters, diesters and/or triesters, alcohols, aldehydes, ketones and terpenes.