I have the same problem . My urine smells like rotten eggs but its not a UTI. I've been having this issues on and off for the last 15 years and been to the doctors many times for it. They treat me with antibiotics but it only cures it for a few weeks and than I have it again. Its embarrassing when I go somewhere and I use there bathroom and the next person goes after me. Its always the same reaction why does the house smell like rotten eggs. There must be an explanation for this but most doctors say its a UTI which is not.