My friends all make fun of me for putting computer fans in weird spots.
I'm gonna mount one on top my black tank vent!! At some point I meant to get a reversible fan for the bathroom roof vent. Same idea of keeping odors from rising out the toilet.
I never add chemical. Winter time it's no big deal. Summer temps i was having problems with what I think was gray tank smells. You guys told me to check the vent under the sink. I covered it with a plastic bag last year to test.
Will have to see how it goes this summer.
I think my trailer has tank vent caps that use wind to suck odors out the tank. Doesn't seem to work.
There was a time I goofed up and forgot to dump. Had the trailer on a jobsite. Flushing produced bad smells. Wish I had thought to put a fan on top the black tank vent.