Originally Posted by oldbernie
Thanks Viva. The soapy water is a great idea. The SMB tank is right and I do mean RIGHT under the toilet. So any kind of odor wafts up pretty quickly.
Couple of questions (realize I'm not familiar with the SMB-type "marine" toilet setup, so these may be inapplicable questions).
1) Does the toilet have a joker valve? This is usually a black rubber piece between the bowl and the rest of the system. It's basically a disc with four "pie slices" cut into it. The "pie slices" open up to pass waste, and then close to seal afterward. Joker valves commonly fail (then they don't close properly) and need to be replaced.
2) Do you keep a small amount of water in the bowl? This can act as a "trap" does on a house plumbing system, and keep odors in the tank.