An aerosol generator (10) comprises a vibratable member (12) having a front, a rear (14), an outer periphery (16) and a plurality of apertures extending between the front and the rear. A support element is disposed about the outer periphery (16) of the vibratable member (12), and a vibratable element is configured to vibrate the vibratable member (12) at ultrasonic frequencies. An isolating structure (18) is coupled to the support element and is configured to couple the aerosol generator (10) to a support structure. The isolating structure (18) has a mechanical vibrational impedence that is sufficient to substantially vibrationally isolate the aerosol generator (10) from the support structure.
