Sniff, but it is something that enters your nose and makes that effect of wanting to smell, it seems but it is not so, perhaps you never had an allergy? When the allergy is through the nose it is as if something enters then the air meter seems like you were sniffing but it is not.
Yes, in my opinion PATM is ORS or rather a follow-up of ORS, i.e. a mental problem. I'm a former sufferer and shared my story on here about 2 weeks ago, check it out. :)
No because i get reactions and comments when I have completely forgotten about patm, then it ruins the rest is of my day. It's not mental it's physical I'm afraid.