I have this too and sometimes the effect affected me but somehow when I suffered the consequences it seemed like I was sacrificing my comfort for other people (because they tend to stop coughing/sniffing/etc). My advice is to stay away from anti-perspirants as they tend to make it worse and they can smell really bad because the proper way to use it is to apply it at night before bed and don't take a bath the day after. When I wear anti-perspirants, I have had random times when my nose suddenly feels pressurized and then everything feels so goddamn stuffy and makes me sneeze and cough just like everyone else, but when I wear normal deodorants, I no longer experience these but people still cough around me; only this time the effect was noticeably reduced. Oh and make sure you hang your clothes and make sure they are completely dry before wearing them or else you're gonna stench. Like you, I've asked my friends if I smell or not and most of them say no. Hope this helps