doxiemom11 wrote:
There are vent things under the sinks. If they get old they may fail to keep odors out. We have had to replace ours as they were letting odor into the rv when any water was put down the sinks or shower. Replacements were cheap and they just screw in/out. There is some kind of baffle inside that opens and closes and if it fails to close you have odor. (Sorry, don't know technical name for it.) And the smell was as bad as a black tank or worse. It smelled like black was wasn't.
Right - those are the autovents to which I have referred as not being the current problem.