An anti-condensation housing includes a connector to connect to a diffusing head configured to nebulize a product to diffuse. The housing includes a conduit having an inlet for a nebulized product, an outlet opening at a diffusing end, of the conduit, a fan at an insufflating end of the conduit. The fan generates a flow of air between the insufflating end and the diffusing end of the conduit. An internal surface of the conduit extending along a direction perpendicular to the direction of the air flow creates an obstacle for the progress of the air flow in the conduit. A retainer to retain the nebulized product stopped by the internal surface. A device to diffuse a product implementing the anti-condensation housing and a method for diffusing a product using such a device are provided.
