I have cystic fibrosis. That damn disease causes me to cough alot and all be damned if thats going to keep me out of the woods doing what I like to do!!! Only one time can I remember actually spooking deer to coughing. Or maybe thats the only time I remember because it was a shooter buck about 50 yards out and was headed right for me. I was coughing enough thatmorning that I should have just got down and went back to the truck. I guess it depends on your cough.