I wash my hunting clothes in plain water with baking soda added and leave them somewhere that they won't pick up odd smells from the house.
I shower in scent free soap. (Neutrogena from the grocery store)
And I use unscented deodorant. That's the whole program. Very little expense or effort.
Even with all that some of what I do is probably unnecessary. It's all about watching the wind, not making your body scent invisible.