Far more important to take care of how you come into the area you plan to hunt.
EXPECT them to come into your set-up from down wind.
More than scent control, I believe in gaining higher ground and remaining motionless.
Often I have to set down my cigarette to shoot them - so I do believe in "cover scent".
Now, those drug dealers do wrap their stuff in "clear wrap"; so you could consider that - LOL !!!