I read that biologically and scientifically, it is no big deal to a deer. Your human sweat and body odor are the main issues that you have to contend with.
I remember a few weeks ago, I had a waaaay too much morning coffee and forgot to pee in the parking lot by my truck. I had my bow, my Summit Viper, etc... and hiked all the way in to my favorite tree, when nature called.
{saying to myself: Oh you stupid dumba$$ - why didn't you pee before?} So, I just let it fly at the base of a nearby tree, but then covered it up with a spray bottle of raccoon pee to play it safe.
Butch A.