Depending on where a whitetail lives, they have to accept some level of human scent or they'd kill themselves running into the ground. Deer that live in human environments smell humans.

Big woods deer that may have never or only associate human with fear may accept NO level. Deer never walk into the wind 24/7/365, and if they live in human environments, do you not think they smell humans? In my woods, no matter what the wind there are humans upwind, my deer don't run 24/7.