When he gets super excited he snorts like a pig and seems to be having a hard time breathing, but my other dogs do it as well so I don't think it's just a Boson thing. If I tilt their head up and plug their nose that usually cures it.
That sounds like a reverse sneeze. Munkee does that & it is scary sounding ( and looking, his whole body convulses). Both pit bulls snort like pigs but Munkee is the only one who sneezes like that.