Inner surface geometries of the five dose aerosolization and containment (DAC) unit designs considered illustrating the inlet orifice (left-hand side), containment volume, and outlet orifice (right-hand side). Designs include (a) Case 1, (b) Case 2, (c) Case 3, (d) Case 4, and (e) Case 5. (f) Rendering of the DAC unit device containing one of the five inner surface geometries.