I can see how someone running their engine for a long time would suck, I just give mine about a few minutes or so around the middle of the movie. Or we bring lawn chairs and a nice boombox. Nobody should leave their car running that long. As for the smoking.
I can think of alot worse things in the air we breathe. Is the guy taping a whole pack together and lighting it all up in one shot? I just can't imagine it's that bad, or you've got a supersensitive sniffer. I mean geez, it's outside.
Some people like a nice puff while enjoying their movie. Maybe a smoking section?
And those giant fans they have at football games, lol!