I've wondered for a while what odors are offensive to deer. I wish that someone would do a study where they could isolate odors (like on a scratch and sniff pad) and put them out to see what deer react to and what they don't. They could put out human body odor (sweat), human urine, human feces, foot odor, halitosis odor (bad breath), hair odor, flatulent,cigarette smoke, chew juice, gasoline, hand soap,leather, rubber, gun oil, pet odors, cut grass, and others. By having the odors isolated we could figure out which ones we need to focus on controlling and which ones we can get away with a little more. I think this would be a huge step in hunter scent control.