A dose delivery device with a mouthpiece having an inlet, an outlet, and an air path extending between the inlet and the outlet. A dose chamber having an opening may hold a dose, e.g., for inhalation by a user. One or more bypass inlets, two or more dispersion chambers, and/or flow arrangements in which incoming and outgoing flow in a dispersion chamber are transverse may be used to disperse a dose for delivery to a user.