I've hunted for 60 years and anybody that says a deer's sense of smell is overrated is plain full of chit!!! If they are down wind of you, then you will never see them to even know they were there to begin with or you will see a flag giving you the raspberries as he departs the scene, LOL! Using the wind whether on stand or still hunting properly is a whole different story. If you're sneaking up on deer frequently to within 20-30 feet, why aren't you the one using a spear or bow? Shame on you for using a rifle on those poor, defenseless deer, LOL!!!