Hi everyone. I'm on my second pair of Birki Profis which are 4 years old. My first pair finally gave in after 5 years. These things are bombproof but the soles always smell like cheese even after I clean them or bleach them. When closing the line and the floor is hit with sanitizer, I make it point to spend as much time standing in it as possible. Still....funk. My last pair had the same issue. How do I kill the bacteria that is causing this to happen?