For what it counts as I can barely breathe if I've just finished my diving and have to breathe in smoke. It chokes me up in such a powerful way because my lungs are so sensitive from the dry hair and working over time to get the humidity back when I'm out of the water. I'd probably count myself as one of those people who would ask everyone to at least stand down wind on a boat. I'm also a pretty avid "anti-smoker" though even though I was raised with two chain smoking parents; not blaming them but this may have played into my discontent for it. It stops being your right when you're infringing on mine for clean air, kill yourself privately, sure but in front of non-smokers, it's just annoying and painful to say the least. I don't have a problem with smoking, people can do what they wish privately. If every smoker enjoyed a scent free, nontoxic exhaust stick to themselves, that's when I'd be encouraging smoking. Until then, you can't "know the effects" of what you're making others put up with until you become a non smoker and deal with someone who thinks you're being an ass asking them to stand down wind or suggests you quitting after hearing you hack up a quart of blood and half a lung. I relate this to the enjoyment of a hobby, I enjoy moderately healthy living and I think after hearing that, others would too. I get the addiction and the habit, I don't understand the ruthless attitude for everyone else to just "deal with it" (I also recognize there are polite smokers, they're just few and far between in my experience).