An apparatus, comprising: a first member defining at least a portion of a disaggregation chamber containing a dry powder, the first member including a chamber wall that forms an outer boundary of the disaggregation chamber; and a second member coupled to the first member, the second member including a surface covering the disaggregation chamber, the second member defining an intake channel and an exit channel, the exit channel configured to be fluidically coupled to the disaggregation chamber via an exit opening defined by the surface of the second member, the intake channel configured to be fluidically coupled to the disaggregation chamber via an intake port, a center line of a portion of the intake channel being tangential to a portion of the chamber wall of the first member such that a portion of an inlet airflow conveyed into the disaggregation chamber via the intake channel has a rotational motion about a center axis of the disaggregation chamber, the intake port defined at least in part by an intake ramp, the chamber wall is an outer chamber wall surrounding the center axis, the first member including an inner chamber wall that forms an inner boundary of the disaggregation chamber, the inner chamber wall surrounding the center axis, the inner chamber wall terminating in a raised surface, the center axis intersecting the raised surface, the exit opening being along the center axis opposite the raised surface, and the second member including a protrusion extending from the surface, the protrusion in contact with the raised surface to maintain a distance between the raised surface and the exit opening. a first member defining at least a portion of a disaggregation chamber containing a dry powder, the first member including a chamber wall that forms an outer boundary of the disaggregation chamber; and a second member coupled to the first member, the second member including a surface covering the disaggregation chamber, the second member defining an intake channel and an exit channel, the exit channel configured to be fluidically coupled to the disaggregation chamber via an exit opening defined by the surface of the second member, the intake channel configured to be fluidically coupled to the disaggregation chamber via an intake port, a center line of a portion of the intake channel being tangential to a portion of the chamber wall of the first member such that a portion of an inlet airflow conveyed into the disaggregation chamber via the intake channel has a rotational motion about a center axis of the disaggregation chamber, the intake port defined at least in part by an intake ramp, the chamber wall is an outer chamber wall surrounding the center axis, the first member including an inner chamber wall that forms an inner boundary of the disaggregation chamber, the inner chamber wall surrounding the center axis, the inner chamber wall terminating in a raised surface, the center axis intersecting the raised surface, the exit opening being along the center axis opposite the raised surface, and the second member including a protrusion extending from the surface, the protrusion in contact with the raised surface to maintain a distance between the raised surface and the exit opening.