Manage you food and water, have a compass,map, cigarettes is the best odor cloak, do your home work.
In 2008 my buddy and I were hiking back to the truck using my GPS in a straight line approach. We were 1/3 of a mile from the truck when I suddenly smelled cigarette smoke. I immediately started looking around for the smoker but couldn't find anyone. Kept hiking and it got stronger and stronger all the way to the truck where we found a guy standing next to his truck smoking. If the cigarette smoke puts me on edge, don't you think it might put the elk on edge?
The most odd time though was when I smelled pipe smoke on a rifle hunt, the really sweet smelling kind of tobacco. It was strong. But there was about 8" of fresh snow on the ground and I NEVER cut another human track that entire day. I searched all over that area and no tracks or smoker that I could find.