Is a Rotten Egg Smell in Urine a Sign of Pus in the Urethra?

A rotten egg smell in urine is often caused by chemicals like sulfur compounds, rather than pus in the urethra. Reference 1 discusses how certain chemicals in the body can lead to different urine odors, including those that smell like rotten eggs. This is usually due to sulfur compounds, which are naturally occurring in the body.

Reference 2 also notes that people can perceive different smells in urine due to these chemicals. While pus can cause changes in urine smell, the specific rotten egg odor is more linked to sulfur.

Reference 3 explains that hydrogen sulfide, a sulfur compound, can be toxic in high amounts, but in the body, it is usually present in much smaller, non-toxic amounts. Therefore, if you notice a rotten egg smell in your urine, it might not be related to pus, but rather to these natural sulfur compounds.