My urine has a smell, sometimes really dark yellow n strong n others being light yellow but still have a stink. i drink nothing but h2o. what is it?

Other causes..: Urine odors can be caused by dietary things other than what you drink ( we all know aspargus "pee" really stinks), but it could also signal something else such as a urinary tract infection, vaginal infection, or a metabolic disorder. Make sure you are drinking adequate fluids every single day and make appointment to have your urine checked out.