Just like your sticks and bricks house, you should smell sewer gases coming out of the roof vents. That's what they are designed to do. Vent the gases to the atmosphere. Depending on the wind and other weather factors, you will sometimes get a whiff of it.
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2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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