[sourdough]

Lestahhh I don't think I read your post #10 close enough. Do you actually have a toilet that you know is retaining fluids causing the smell? If that is the case why don't you replace the toilet (root cause) vs trying to upgrade the vent (unneeded solution)? Toilet won't cost much more and is no harder to install - then you fix the problem instead of constantly trying to either cover it up or add more fans. btdt