Brush teeth with a baking soda toothpaste. Beware of cooking smells, particularly bacon. Don't use heavy scented gun or bow lubricants. When hunting sponge down your boots daily, or purchase a pair of rubber bottom pack boots. Pack your hunting clothes before and after your day afield in unscented plastic bags.
Most hunters try to cover their scent with cover scents.
The fact is that wildlife can determine the distance of an object from the strength of the molecule it senses. The answers to these questions are, at best, an educated guess.