The invention relates to a system (1) for releasing volatile substances comprising a receptacle (2) housing a volatile substance; a ventilation surface (3) arranged in said receptacle (2) provided with ventilation windows; and a fan (4) for inducing the ventilation of the scent of said volatile substance, characterized in that said fan (4) can move between at least a first position and a second position. The effectiveness with which the perfume evaporates during the work cycle of the device can be improved and controlled with the system of the invention.