I use to be very wary over leaving my "scent" around my stand. Then one time I was in my stand for a while and had to go. I was feeling a bit lazy and didn't want to climb down and go. So I just went right out of the stand. About a half hour later I had a doe and her fawns come by. They walked right under the stand and did not spook. This same thing happened another time.

Since then I don't worry about it. I've taken quite a few deer after urinating out of the stand, though I'll admit, none were mature bucks.