Thanks, Old-Biscuit! It started out smelling like caca. In fact, at one point early on, I stopped to look at the soles of my shoes! But it quickly morphed into something more awful and that is what persisted.
I opened the windows and aired her out. Then the next day went back to check to see if the odor was still there. It was not. I did notice that the lid to the toilet was wonky....one of the hinge bolts had come loose and the lid was sitting about half on and half off. But no odor.
I fixed that hinge bolt and drove for a while. No odor. Increased the air pressure in the bags and drove some more with no odor.
So everything seems ok now. Maybe inflating the bags moved something underneath related to the black or grey tanks. The bags were apparently underinflated to start with.
Originally Posted by Old-Biscuit
Doubt it has ANYTHING to do with those air bags........
Does it smell like caca ?
Could be black tank if toilet bowl doesn't hold water
Could be grey tank if 'air admittance valve' doesn't close (AAV are installed on sink drain pipes after the 'P' traps so water remains in 'P' traps when you dump grey tank.
They are hand tight on a stub pipe under sinks ....inside is a rubber flapper with a tang that pulls flapper up/closed. Negative pressure pulls the flapper down/open allowing air into sink drain line after 'P' traps. Tang gets stretched and flapper stays open---grey tank odor comes inside rig
(Food debris, grease/oils, scum, sloughed skin cells, hair etc......mixed all together and it can stink worst then black)