About 4 years ago I was hunting over a soybean field, wind was blowing straight into the field, I was about 15 feet up in a tree...After about 15 minutes, I had 5 does stand up about 300 yards away and leave the field and go into the woods...So I know they can smell you from 300 yards...When they stood up, their noses were straight up in the air, stood there for about 5 minutes before they left...