This summer I went out to a foodplot in the woods to recharge a mineral lick, you could pretty
easily smell the deer odor or at least that it what it seemed like (bovine) and we don't have cows
or elk and there was plenty of deer sign.

So when its hot and they've been bedded down or hanging around in an area a while, I'm sure that
there is plenty of scent. But on the move I don't see them leaving much of a scent trail for a human.

I don't know that it would be much of a hunting tool, but you are pretty extreme KP.