Why does asparagus make urine smell Are there any other Garden Asparagus may cause a noticeable smell in your urine. It is widely known that consuming this verdant plant can lead to a pungent fragrance while visiting the restroom. If you see an unpleasant odor once you've indulged containing asparagus, don't panic. It is simply a normal result that occurs physiologically. Feel confident that the odor is harmless and will fade over time.