Imagine having a ghost allergy, though. You could go into business doing paranormal investigations or w/e, just show up somewhere and wait to see if you start sneezing.
But what if you also had hayfever, so they’re like is it a ghost, and you can only shrug and say “could be the pollen, or a poltergeist.”
That’s what fine print is for.
This is literally the premise of a kids book series!! Except I think he can see the ghosts too so when normies are like why are you sneezing so much he’s like… It’s those gosh darn dust mites (his ghost friend giggles and gives him a thumbs up or w/e)