Presented are apparatus and methods for generating an inhalable medium. An apparatus comprising a container (132) holding a liquid, a heater (130) for volatising the liquid, and a plurality of discrete material elements (124, 126, 128) is used. The liquid held in the container is volatised. At least one of a vapour and an aerosol formed by the volatised liquid is passed through one or more of said plurality of discrete material elements. One or more constituents of the one or more of said plurality of discrete material elements is thereby entrained in the at least one of a vapour and an aerosol to produce the inhalable medium.
