There are a number of ways to hide your scent when game hunting and some are better than others. Plenty of hunt supply shops offer masking scents. These masking scents are used to recreate one of natures outdoor smells, such as the scent of small game, or even of the forest itself.
According to experts, what is the only thing a deer cannot smell? Got it yet? Well the answer is NOTHING. If you are using a masking scent, the deer can still smell you. It might not know who you are yet but it certainly knows you are there. The best method then of avoiding detection from your odor is to not have an odor. Use unscented shampoo and soap and don't use scented deoderants or aftershaves etc the days leading up to the game hunting trip.
Use unscented detergents to wash your hunt attire and if the weather allows, hang it outside the day or night before to let it air. Keep any food you carry sealed in air tight bags and make sure your equipment is clean of anu odors.
The opposite to using scents to blend into your surroundings is to use scents to lure your prey.
Lures are designed to tempt the animals natural curiosity by imitating say, a doe in heat perhaps. This hopefully will attract both the buck looking to mate and other doe looking for company, close enough for you to take your shot.
Many game hunting pro's will agree scents can be useful if used properly. Animal experts tell us a mature buck can smell 1 part human odor buried beneath 10 000 parts of any masking scent. We know deer rely on their sense of smell for survival so these facts should not really suprise us.
When using a lure for game hunting bare in mind you will have to be extremely vigilant and time your shot to perfection. The prey will only get so close before "smelling a rat" and bolting for cover.