One more time, if you are getting smells in your RV, there is a leak in your venting system. The odor is mostly Hydrogen Sulfide. The leak can be found by filling the system with water or a plumbing smoke test.
In plumbing a smoke test forces non-toxic, artificially created smoke through waste and drain pipes under a slight pressure to find leaks. ... Plumbing smoke tests are also used to find places where pipes will spill fluid, and to check sanitary sewer systems for places where ground water and storm runoff can enter.
Prolonged exposure to Low or Moderate levels of Hydrogen Sulfide may result in the following: Skin irritation, shortness of breath, irritability, poor balance, poor memory, confusion, eye irritation, sore throat and cough, dizziness, headaches, fatigue, nasal and lung congestion, loss of appetite, nausea and vomiting.