IAMACHIBAD wrote:
I would check and replace the air admittance valves.
Changed mine out and the smell was gone!
X2
Best $5 and 5 minutes I've spent.loiskathy wrote:
Make sure you have water in the sink and tub/shower drains.
These two recommendations should take care of it. I always (now) dump prior to storing for more than one week, and flush thoroughly as advised above.
When using head... Recently taken to running Fantastic Fan on high speed "IN" to pressurize the RV---prevents sewer gas from being drawn in when john is flushed (which may occur when using only bathroom fan/vent).