A method of delivering a nebulized fluid for inhalation, including providing an aerosol generator, providing a container containing a fluid to be nebulized, providing a reservoir in fluid communication with the container and with the aerosol generator, providing a moveable member positioned to act upon the container in a manner to elect fluid therefrom, providing a linkage mechanism operable through a range of operating positions that is coupled to the moveable member to selectively control a distance of movement of the moveable member, selecting the distance of movement of the moveable member, moving the moveable member to eject fluid from the container into the reservoir, and operating the aerosol generator to elect fluid from the reservoir as a nebulized fluid for inhalation.
