Hi
Is there a strong history of allergy in the family?
Do you have any known allergies before?
I suggest that you seek consult with an allergologist to have the specific allergens assessed and determined. It may be that you are sensitive to dust and certain materials from clothes and cosmetics (eg make up, perfumes etc). Have you been assessed along this line?
It may be psychological, or anxiety related. Something in your brain relating to people must trigger a response which creates these symptoms for you. I belive you. It could be a new strain not a single soul knows about. But may not be scientific yet. Obviously there is no name for it. When I say psychological, there is some odd psychology with facial itching and conversations with others, I am not sure exactly what it is. Or, I wouldn't be suprised if was an odd strain of staph that no one knows about because those staph bugs are getting quite mutated and seem very able to conform themselves. I doubt they have grown wings yet, but if they have learned to "drift" off on a spec of dust by now, that could be the reason. Maybe try the "tapping" technique for training your brain to stop reacting to the thoughts. Just one suggestion.