Perfume composition with odor modulator compounds and 1-aza-3,7-dioxabicyclol [3.3.0] octane compounds for enhancing and prolonging the scent intensity

The invention relates to a perfume composition comprising at least one odor modulator compound and a 1-aza-3,7-dioxabicyclo [3.3.0] octane compound for increasing the fragrance intensity of the perfume composition, and a consumer product comprising such a perfume composition. Furthermore, the invention relates to a method of increasing the fragrance intensity of the perfume composition and the use of at least one odor modulator compound and at least one 1-aza-3,7-dioxabicyclo [3.3.0] octane compound for increasing the fragrance intensity of the perfume composition.