Before revision: One study suggested that old person smell may be the result of 2-nonenal, an unsaturated aldehyde which is associated with human body odor alterations during aging; however, there are other hypotheses, such as change of the monounsaturated fatty acid composition of skin surface lipids and the increase of lipid peroxides associated with URL
After revision: One study suggested that old person smell may be the result of 2-nonenal, an unsaturated aldehyde which is associated with human body odor alterations during aging; however, there are other hypotheses, such as change of the monounsaturated fatty acid composition of skin surface lipids and the increase of lipid peroxides associated with aging.