 [ Symptoms ] why does my pee smell like rotton eggs i drink a lot of water and iam also drinking lemon and water but sometimes my pee smells like rotton eggs i notice that i dont eat aspargus often so i know that is not the cause [ Disease ] urine can have an odor when it is very concentrated or from other foods some foods such as asparagus vitamins and antibiotics such as penicillin  can cause urine to have a different odor a sweet fruity odor may be caused by uncontrolled diabetes a urinary tract infection uti can cause a bad odor urine that smells like maple syrup can mean maple syrup urine disease when the body can not break down certain amino acids a rotten smell should be medically investigated at least by a urinalysis