Foods, vitamins, and medication can all change the way your pee smells. For example, asparagus causes an ammonia-like odor for some people. Your pee also may smell stronger if you don’t drink enough water or you take vitamin B-6 supplements. But some health conditions can do it, too. Diabetes, bladder infections, kidney infections, and liver failure can all change the way your pee smells. Talk to your doctor if there’s a sudden change and it doesn’t go away.