You seemed to have missed the part where the same comment called the OP's concerns "unhelpful paranoia" after the OP's doctor said that the pain they're experiencing is due to chemical burns.

So instead of armchairing the chemical composition of smoke, how about we just not call other people's concerns paranoid, and not excuse others doing so?

This forum's guidelines call for civil discussion, and the OP also commented in this thread. Paranoia is not a word that belongs here.