A breathing interface device includes a housing defining a chamber. The housing includes a first opening in fluid communication with the chamber and a positive pressure source, a first nostril tube in fluid communication with the chamber and having a first central axis, and a second nostril tube in fluid communication with the chamber and having a second central axis. The first nostril tube and the second nostril tube configured such that the first central axis and the second central axis of the second nostril tube intersect to form an angle. The breathing interface device further includes a nasal interface element that is removably couplable to the first nostril tube. The nasal interface element is compressible to fit within a nostril of a user and expandable to make contact with an inner edge of the nostril.
