A removable replaceable cartridge for use with a liquid diffusing device. Thecartridge includes a venturi, a conduit extending to the venturi, a mixing areaand an outlet path for atomizing and dispersing a liquid within the cartridge.A diffusion device including a removable replaceable cartridge received withina housing. The housing includes a source of compressed gas which is directed intothe cartridge. A venturi head with a unitary body for use with a diffusion device.
