rvshrinker wrote:
Is this a well documented real hazard? I mean, air goes out the kitchen vent whenever it is turned on; and presumably some air can come in as well. A hint of air can come in from around the doors, and maybe from around the slide seals.
I don’t see a lot about this on google, and we’ve run the vent plenty without opening any windows.
You’re saying if I get a hint of eau de toilette I’ve somehow overcome the valve described above? Or the water trap itself?
OK, I think what is going on here is that you have a RV toilet that has a water trap. Like a house toilet does. A lot of RV toilets have no trap and when you flush them you are just sliding open a door on the bottom of the toilet that lets the waste fall directly into the holding tank. If you have that type of toilet and you are running the exhaust fan while flushing it will draw air out of the holding tank and cause a smell in the RV.