I carry a pee bottle and use it. Ten years ago I did pee out of my stand and on one particular day a doe came under my treestand. I was curious to see how the deer would react and it walked right up to where I was peeing and stopped. The deer did not approve of my urine. She turned around and went back the way she came in a semi-casual manner.
The deer had to walk right over the pee to get spooked. I would not be worried about pee spooking deer from a distance. However most of my hunting is close range so I pee in a bottle.