The reason I asked was my wife came home from hunting and said, "Do not laugh at me but I thought I smelled a deer." I told her that I have smelled deer before and she did not believe me.
I placed her stand down wind of a bedding area. She told me that she smelled a deer and a few minutes later she heard a "Grunt" She used a can call and the buck responded several times. She described where she heard the deer as it was moving.
It was classic. The deer got up from the bedding area and circled up wind of her. The deer used the cover of the thicket to travel and circled down wind of her and stopped grunting.
She did not see the deer at all.