We are thinking once we clean it out really well, and add all the ingredients others have mentioned, like bleach, detergent, water softener all that good stuff, maybe even some ice for that first long drive and then a good dump of tanks and cleaning we will be ok. It is not a terribly over powering odour, but it is there, and I personally would like it gone..lol. Our Old Girl is a work in progress as are we as RVers...lol.
Bob and Sally
1999 Rexhall Aerbus 36'
Towing 2002 Tracker