In one embodiment, the present disclosure provides a portablenebulizer comprising a housing (20), a mouthpiece (30), a reservoir (40), adisk (50) having multiple pores, and a unit (61) that is configured to causethedisk to vibrate, wherein the vibration of the disk creates a pressuredifferentialthat causes a fluid from the reservoir to move through the disk to create anaerosol for delivery. In one embodiment, the mouthpiece may be held in placewith at least one metal plate (35) imbedded in the mouthpiece and at least onemagnet (36) imbedded in the housing. In one embodiment, the reservoir mayhave a non-cylindrical shape. In one embodiment, the nebulizer may comprisea battery (71) and a USB port for charging the battery.