Not a expert by any means, seems I am always learning something about whitetails. With that said though, I have seen them come up and smell the ladder that I just climbed 5-10 minutes ago and not be alarmed, yet it they cross through my sent stream, when the wind swirls it is game over. In an area that has a lot of human traffic the doesn't seem to bother them the way our sent blowing on the wind does.
I also know that can deer pattern us, simular to the way we pattern them. Having multple stands can help avoid this problem.
Sometimes while out, I will push things further than I should, just to see what I can get away with, that there can make for great learning experiences.
Thanks,