Why worry about something that you can avoid. I play the wind. If it is blowing the wrong way I change my plans. If it changes while I am sitting, and I hunt the ground, I get out of there. It doesn't matter how long or how little I have been there, if the wind gets wacky I am out of there.
I do take certain precautions, clean clothes washed in scent-free detergent and hung outside to dry. Knee high rubber boots that get hosed down with scent killer spray. I try to not touch anything going into the area I am going to hunt and I will step in every pile of "wild deer berries" I come across heading in.
I do get a little crazy with diet as it gets close to Archery season.
I have not had any red meat since late August, I think your body gives off certain odors that are more alarming to deer when you eat red meat. Call me crazy, but I like getting close and this seems to work for me. I also eat a pile of apples this time of year, not because it is hunting season, I just like apples. Six or seven a day plus I am usually eating one on the way to my sit. I'm probably peeing apple cider.
If you can't get past there nose........game's over!
Good Hunting,
Craig