I've always tried to hunt deer so I'm downwind. But I've seen people say deer walk with the wind in their face. If that's so then chances are if I'm downwind from a deer its walking away from me, but if I'm upwind and its walking towards me it might smell me when it gets closer(I use scent blocker but that's not 100% effective). Kind of a "damned if you do, damned if you don't" thing isn't it???