I have never smoked on the streets.. too paranoid i guess. I have been in trouble with the cops a lot in my life so that's where the paranoia comes from i guess. But yeah, i smoke cigarettes, but it seems to have no effect on my lungs. I have been smoking them for a good time now and i have no smokers cough and have no lung problems when running. I think i'm blessed Either way, i smoke weed too and i can still do the same running excercises i have always been able to do. Long distance running has always killed me though.