Why Can't Some People Smell Asparagus in Their Pee NBC NewsSpear Grass may cause a noticeable scent in your pee-pee. It is commonly known that consuming this green vegetable can lead to a strong fragrance during a trip to the bathroom. If you observe an unappealing aroma after enjoying a meal including asparagus, don't panic. It is merely a typical reaction that occurs internally. Be reassured that the odor poses no harm and will diminish over time.