It's selfish on both sides, because they both expect others to go out of their way to please them.

Smokers, though, harm other people with their smoke, so it's *more* selfish for them to expect other people to fit in with them. However, I think it is similarly selfish to wear strongly smelling perfume (or anything else strongly smelling) when you'll be in close confinement with other people, but other people (who do not have asthma) disagree with me.