I hunt from blinds every year with great success. What I do is brush them in a month early and rub leaves and sticks all over them. Plus, I do spray some scent killer (this is probably overkill, but I do it anyways)
The real benefit about hunting from a blind is it does help eliminate your scent. I never worry which way the wind is blowing, or even if it's raining.
After a month of being outside the scent goes away and the deer get used to them.