Originally Posted by Gene
Running the bathroom exhaust fan helps a little. And staying away from beans helps too.
Can't disagree about beans.
But my experience with the bathroom fan is 180 degrees opposite yours. I find closing the fan fixture and the lid when flushing helps a lot. When the bathroom vent is open (especially with the fan on and air being sucked up out of the trailer) plus the toilet seat is up, black tank odors just get drawn right up with the breeze.
I'm going to back flush this weekend at my site. The draw bar at the blank tank has been feeling tighter and despite a complete full tank flush every time (without fail) before storing, this weekend didn't get off to a great start in that department :-)