A mist inhaler including a pod and a driver, the pod comprising: a housing having a first end, an opposite second end and at least one side wall extending therebetween; a liquid chamber containing a liquid comprising a therapeutic; a spacer including a hollow interior surrounded by a perimeter; a fluid flow manifold positioned at least partially within the hollow interior of the spacer and including a first side proximate the first end wall, and a second side proximate the second end wall, the first side of the fluid flow manifold including a channel and a cavity, the cavity including a first aperture for allowing fluid flow in a first direction, and one or more further apertures for allowing fluid flow in a second direction; a sonication chamber including the cavity of the fluid flow manifold; an ultrasonic transducer; an air inlet conduit; and a mist outlet conduit; the driver comprising: a driver casing having an air intake aperture; a casing recess; electronic components configured to generate control signals to control the operation of the pod, and drive signals to drive the pod to generate a mist; and a bulkhead positioned within the casing recess, the bulkhead including: a body including a portion that extends from the top surface to form a seal; a plurality of apertures formed in the body and positioned in an area at least partly surrounded by the seal; and a bulkhead intake conduit in airtight fluid communication with the air intake aperture and with a first aperture of the plurality of apertures, the bulkhead intake conduit being configured to conduct air from the air intake aperture to the pod through the first aperture of the plurality of apertures in the bulkhead; wherein, when the driver is coupled to the pod, a part of the pod is received into the casing recess, the seal of the driver contacting the part of the pod forming a substantially airtight seal therebetween to prevent air leaking out from between the bulkhead and the part of the pod.