A gas, such as air or oxygen, enters the connector 6 through a gas inlet 61 of the connector 6 entraining the generated aerosol therein, and the air with entrained aerosol medication is delivered through an outlet 62. [0060] A controller 50, which may be connected to the apparatus 1 by means of a control lead 52, controls the generation of the aerosol and the associated oscillation of the liquid s