...do I have to taste the nose farts?

Ear pee seems less inconvenient, and could be used as a defense mechanism.

I genuinely cannot answer this.

Pee through the ears because then I don't have to smell farts right at the source

Fart through my ears. I can't stand the feeling of water in my ears and I imagine piss isn't much different.

Ear pee. Using the bathroom will be weirder and messier, but not unmanageably so.