My coach had an odor problem when we would flush the toilets while on the road. Over about 45 MPH the black tank odors would intrude into the living space. The cure was to install one of the Camco Cyclone directional roof vents on the black tank. The folks at the service center did this for me.
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Brenda & AL
2017 Thor Venetian, T42 "Groot"
2020 Chevy Sonic, 2019 KTM 790 Duke
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