You searched for: “misocapnist
misocapnist (s) (noun), misocapnists (pl)
1. A person who has an intense animosity against smoking or having anyone around who is polluting the air in the immediate vicinity with tobacco smoke; whether from cigarettes or cigars or from any similar process of smoke distribution: Lynn’s mother was considered to be a misocapnist, sending anyone  holding a "cancer stick" in his or her hands away and not permitting them to come into her house!
2. Anyone who fears smoke exhausts from motor vehicles which are blamed for causing so much pollution in the air: The smell of car and truck emissions made Cindy so sick to her stomach that she decided to live in the forest away from such pollution; and her friends, who were also misocapnists and had similar problems, went to live with her!

Here is a capnophobia link, Part 1 of 4, with images and information for a better understanding of capnophobiacs and why they hate smoking as related to the dangerous practice of smokers.