Yes! Patm is your body emitting toxins.
The nose emits toxins at a significantly more rapid rate than the mouth.
People used to say that when others would cough around them it would make them anxious which made patm worse.
What really is happening is that you are sniffing trying to smell what everyone else is smelling. The increased nasal activity is what makes it worse. Block the nose using plugs and the only other ways your body can release these toxins are through your mouth, your rectum and POSSIBLY the ears (haven't tested it).
"WOOSAH" yoga/meditation does nothing to help patm other than calming you down and encouraging you to take slow deep breaths though your mouth.
Staying hydrated appears to also aid with reducing reactions, probably helps dilute the toxins you emit.
I'm gonna keep posting this theory until a cure is found.