Chlorophyll
Breath is the worst offender. My suggestion is to purchase chlorophyll tablets and chew a couple every once in a while. It will eliminate the breath odor in the mouth and from the stomach. Also, if you are REALLY serious about scent, 1-2 weeks before your hunt change your eating habits to vegetables, nuts, grains and fruits and stay away from from heavy spices. When you sweat, you sweat out whatever you have been eating. I do use order eliminators because they don't hurt. Over the years I've had a lot of deer come in that I could have tapped with a bow.