This is the first I have heard of this but, sounds like a good idea to me.
I will have to try it. I have always liked to use woodsmoke for a cover sent. Here there is a lot of small camps that burn wood to keep the
chill off at night so the deer are used to the smoke. I would have a small smudge burn to get the smoke on me and then put it out. Then head out
hunting, this has worked well for me.