RE: Chewing or Smoking in the woods
Personally, I think all the scent stuff is a bit of a marketing ploy. I've never used it and have had deer within arms reach many times while hunting from the ground.
I did and pee in the woods as well. The only time I use a bottle is when I hunt from a blind with... um... not real accessable windows.
Deer spook to noise and movement in my opinion.