Why does asparagus make our urine smell BBC FutureGarden Asparagus can cause a noticeable scent within your pee-pee. It is commonly known that eating this green vegetable can lead to a strong aroma while visiting the restroom. If you see an unappealing aroma once you've indulged including asparagus, there's no need to worry. It is merely a normal result that occurs within the body. Rest assured that the scent is not dangerous and will fade over time.