I'm not condoning the practice, but so far this season I've had an 8pt and a 6pt literally walk past me at 20 feet, not yrds. I smoke on stand but I wasn't at the time of these sightings. I let the 6pt walk and didn't have a good shot at the 8pt or he'd be dead.
I do believe it's the movementsassociated withsmoking and not so much the smoke itself that gets guys busted. IMHO