Why does asparagus make urine smell Are there any other Asparagus might cause a noticeable scent within your urine. It is widely known that ingesting this green vegetable can lead to a pungent whiff while visiting the bathroom. If you see an offensive aroma after enjoying a meal comprising asparagus, do not be alarmed. It is just a natural reaction that occurs physiologically. Be reassured that the odor is not dangerous and will fade over time.