Well it sounds like a lot of people use scent control stuff, I think a lot of it is a big scam. What they never mention is that any prey type animal with good scenting ability can smell a meat eaters breath a long way, and I never heard of any way to eliminate that. Now if you are a vegetarian some of that stuff might do you some good but I do not recall meeting any vegetarian hunters.
We bow hunted and did well in the 50's and 60's with plaid and green clothes but I do believe camo helps some. A deer can see blue and green and shades of black and white the also see beyond the color range of humans and that is where the color brighteners in most soap are detrimental to hunting.
The eyes of a deer are designed to see movement,that's why high in a tree or a ground blind makes a big difference.