Oh, come one! If you are irritated by the guy two cars away blowing smoke out his window, it's not because of the smoke, it's because of your attitude about smokers. There is absolutely no scientific reason why a guy smoking a cigarette two cars down would irritate your lungs/eyes/whatever more than an SUV while it is running.
And the attitudes of those like you are the reason I am turning more militant. You have no clue.