Urine is actually almost completely sterile (at time of excretion) and not even particularly toxic.
Urine may be sterile when excreted, but it acquires significant bacterial charge when exposed to the environment. These bacteria break down urea and produce ammonia gas, which is quite irritating.
Urine may be sterile when excreted, but it acquires significant bacterial charge when exposed to the environment. These bacteria break down urea and produce ammonia gas, which is quite irritating.