Review on 🌀 Camco Cyclone Rotating Sewer Plumbing Vent - Eliminates RV Holding Tank Odors, 360-Degree Rotation for Effective Odor Extraction - Black (40597) by Trevor Blazis

I installed this on a Tiffin Allegro bus in hopes of eliminating the odor from the toilet when flushing while driving. After a few days of use, an empty tank will smell. as expected. When we park it is not a problem if there is no wind. However, while driving, the pressure in the black tank was higher than the ambient pressure in the bathroom due to air rushing into the vent pipe or the RV depressurizing (or both). When the toilet was flushed while driving, stinky air quickly flowed out of the black tank into the bathroom. This vent changed the pressure drop so that the pressure in the black pan is now less than the pressure in the bath. Now, when it's windy (in a parking lot or while driving) and the toilet is flushed, a 'puff of air' flows from the toilet into the black tank. Ideal.