First, I'm not sure a deer can identify human urine as such, unless they've learned by some experience. Second, if a deer can smell your pee on the ground below your stand, it's likely they can smell your breath and b.o. as well.
It makes sense to minimize clues to your presence during the early season, but once the pumpkins hit the woods, their stink and noise are everywhere, and the deer have to cope with that or stay in a constant state of agitation. I doubt it matters much at that point where you pee, poop, fart, or belch, unless they see or hear you do it.
I've seen gum meant to keep your breath from scaring deer; wonder if there's something you can eat to make your pee smell good to them, maybe asparagus?🤢
