A case in point as it relates to this subject. Two years ago I went through my usual de-scenting process and then also smoked and aired out my clothes before going deer hunting. I make no claims on being totally scentless, but I do know that lowering your level of scent is very beneficial.So anyway, I get to a spot where I want to hunt, and three minutes later a Doe leading a buck comes trotting my direction.The Doe comes from across wind and then go's below me down wind at a distance of 15 to 20 yrds. As soon as the Doe got directly down wind, she stoped and smelled the air, sniffing with her head in the air, with the Buck stopping some 35 yrds behind her. I thought this is it I'm busted. She's going to sound the alarm and the Buck is going to turn and run. It never happened. The Doe looked my way as she sniffed, but then continued on her way with the Buck in tow. I killed the 16 in. wide 8 point as he continued behind his mate. You can dismiss it to whatever, but when these like scenarios happen repeatedly, there's only one conclusion I can come to.
I was sure that Doe smelled the wood smoke from my close, yet my total scent output wasn't strong enough to trigger a fleeing response from the deer. I was hunting in the middle of a 500 acre tract of solid wooded forest where the smell of wood smoke from other sources would be slight and/ or very occasional, if at all.
I believe the smell of wood smoke in that area, being somewhat unnatural for the location, caused the Doe to ponder it's source or potential threat, but wasn't unnatural enough to raise a flag.( pun intended )