Well, here’s the message from the NonSmoking Public…
If we have to share the air with you, then we do not want to breathe your fucking exhaust fumes
It’s analogous to you not wanting us to sprinkle our shit onto your food and drink, not even a tiny little bit, say the tiny amount of shit equivalent to three seconds’ worth of breathing your respiratory shit/exhaust. Oh, and our sprinkle/shit? We added a few carcinogens and other and sundry poisons, just really small doses, don’t trouble your pretty little head about it. Just shut the fuck up and eat our shit, the shit we sprinkle in your food. 'Cos, see? We’re more important than you!
It’s just like that, yes?
There’s second hand smoke; but no second hand cheeseburger; no second hand heroin…
If you must indulge/suffer your self-destructive activity, then do it with your own fucking air.
Having said that, part of the problem are the rocket scientists that decide to put the smoking areas near the entrances/exits, hence placing the exhaust clouds in the path of everyone entering or leaving the building.
Then again, I can hold my breath for a loooooong time now.