I have found that deer are not alarmed to the smell of smoke too much. I have shot them with a cigarette burning, and they were less than 30 yards away. They might think it is a smelly truck.This is TRUE above.... If ya hunt areas like I do... Not out in the boondocks high woods area where Deer not customed to sounds, scents etc..... If ya hunt Deer where I do and it is silent, no smells of smoke, cars, people working etc.... They KNOW something is up LOL...