A Fragrance diffusion system is provided having a diffusion device which has two opposing walls spaced apart from one another, at least one wick, and at least one air intake. An upper first bottle has a first neck the opening of which is positioned facing one of the two opposing walls referred to as the upper wall, a lower second bottle having a second neck the opening of which is positioned facing the other wall referred to as the lower wall. The upper first bottle has the fragrance which, by impregnating the wick, on the one hand causes the fragrance to diffuse into the cavity and to outside of the device via said at least one opening, and on the other hand causes dripping drop by drop into the lower second bottle. The lower second bottle having a capacity which is dimensioned so that the level of the liquid transferred into said lower second bottle is situated below a lower end of the wick.
