Yes I smoke on stand and have killed and seen my share of game while doing so. This includes several Bear at distances of from 15 feet to twenty yards also Bobcat and Coyotes. While I do not encourage anybody to smoke at all it really does not seem to be a major deterrent to seeing game. I do agree that there may have been many deer and other critters that busted me before I ever had a chance to see them, but that is like anything else, you can't prove it or disprove it. The Indians used to take steam baths before hunting, part of a religious ritual more than for purpose of overcoming human odor, then stand in the smoke of a fire made of willow or other pungent smelling wood or grasses to finish the process. Trappers used to use canvas gloves which had been smoked in similar fashion to cover human scent from their hands when handling their traps and they would also smoke their traps prior to the first use for the season.
I guess that smoke, no matter what the source, is as natural to the environment as a North Wind and does not alarm animals too much.

Coastie
"Count the day lost whose low, descending sun
is not, in part, obscured by powder from my gun,"
(Anon)