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Do you get a REALLY bad sewer smell after the RV sits for a time? It may be possible that the toilet valve doesn't seal completely letting sewer gasses escape the tank. To test for this problem, fill the bowl with water and let it sit. If the water drains out the valve is not sealing completely. One way to solve this problem is to put a light coating of waterproof grease or Vaseline on the seal.
|Jennifer Mathes, Ph.D.|