An aerosol powder delivery device (100) comprises a cavity (103) betweenupstream (110) and downstream (140) filters.. An the aerosolizable powder(120) and a second powder (130) to mechanically break or loosen aerosolparticles from the aerosolizable powder are provided in the cavity. Thus, asmall, lightweight, simple, sealed and stable device without complex movingparts, external power sources or heat is provided to aerosolize powder intoaerosol particles for transmucosal delivery into a mouth upon inhalation. Amethod of producing or delivering aerosol particles, a method of making adelivery device, and an inhaler kit are provided also.