On our way back from a long weekend we stopped at our usual rest stop to dump and the water pump wouldn't work. So we rinsed as best we could and headed home.
I parked and as I usually do, plugged in and went about our post flight duties. About an hour after we parked I went out to get something and inside it smelled like we didn't clean out well so we added water to the tank and threw in another deodorizer.
An our later I went out to see if it was better and realized that it wasn't sewer smell but a battery cooking! I hit the battery disconnect and unplugged. I opened the battery compartment and had to let it slam shut. I decided that the coach was safe and let things settle.
The next day I opened the batter compartment and found the source of the smell!