Why would my urine smell like onions?

Urinary Odors. Urine odors typically come from what we've eaten or meds we've taken more than from worrisome illnesses. If there aren't any symptoms of infection such as urgency/frequency, burning with urination or bladder pain, i'd likely suspect it's something that will get better on its own. If it persists or any of the above symptoms arise, especially if feverish, go see your primary doctor.