>>>>And I wish I could say I've never smoked a cigarette my entire life - even though the few dozen packs I smoked in the 1980's aren't likely to impact me...
>>
>>Even if you did inhale. ;-)
>>
>>>>I'd rank it as one of the dumber things I ever tried. (That...and the one time I tried to fast dance)
>>
>>Depending where you live, inhaled material from roading probably is a bigger issue than long-ago puffs on a cigarette.
>
>I smoked from my teen years to my forties.
>My older brother never smoked.
>He can walk up a hill without puffing- I have to stop every few yards.

I can do one better: I was like that before I started smoking, and that was in 1975. Some kind of mild heart condition. It hasn't got worse or better over the years. I can actually walk uphill fine, without panting, at my speed, which is perhaps 80% of the speed of others. Or I can do manual labor in the garden (like pushing the mower over bumps) for a while - sometimes 15 sometimes 45 minutes, and then I have to take a break. As I get myself into shape after the winter lull, these breaks get shorter, presently only a couple of minutes, but I still have to take them. And I can keep working like that all day.

Ah, yes, about one in three such breaks is a cigarette break.