A device for double fragrance diffusion of scents is provided with an internal mechanism 18 comprising gear means 18.1, 18.2, 18.5 and a cam 18.4, featuring a flat surface positioned in such a way as to adhere to the lower flat surface 6.1 of at least one of two pressurized containers 6 and a toothed surface engaging said gear means operationally connected to a direct current electric motor 19 which, upon starting, operates said cam and triggers a lower thrust on a container 6, or alternately in the other, as a function of the sense of rotation of the cam, and makes a pressurized scented liquid go out from the valve 6.2 provided with a conveyer 6.3 conjugated with either hole 7 of an outer case 2, in the form of an aerosol. The device is provided with a control unit for controlling said release mechanism 18 and for selecting the fragrance that is appropriate for the assessed environmental conditions； for this purpose, the device is provided with sensors internal with respect to the device which allow to monitor the thermo-hygrometric and acoustical conditions of a reference environment and of actuators for interacting with users by way of sensorial alerts. The device can be a component part of a kit also comprising two pressurized containers, each containing a scented liquid, and a support, positionable inside a compartment of the intelligent device, for a removable insertion of the two containers.La présente invention concerne un dispositif de diffusion de parfum double d'odeurs doté d'un mécanisme interne 18 comprenant un moyen d'engrenage 18.1, 18.2, 18.5 et une came 18.4, présentant une surface plane positionnée de manière à adhérer à la surface plate inférieure 6.1 d'au moins l'un de deux récipients pressurisés 6 et une surface dentée en prise avec ledit moyen d'engrenage fonctionnellement reliée à un moteur électrique à courant continu 19 qui, lors du démarrage, actionne ladite came et déclenche une poussée inférieure sur un récipient 6, ou alternativement sur
