Why does asparagus make urine smell Are there any other Garden Asparagus may cause a distinctive scent inside your pee-pee. It is widely known that eating this green vegetable can result in a powerful fragrance while visiting the bathroom. If you see an unappealing odor once you've indulged containing asparagus, do not be alarmed. It is merely a typical reaction that occurs internally. Rest assured that the scent poses no harm and will fade eventually.