We've never had a problem, smell or otherwise, with the toilet, so I've never tried to devise a fix. But it continues to amaze me that people will pay $1000 or so for a new toilet, and invest days of labor, to make a change.
Most of the time, the stated reason for replacing the toilet is to eliminate smell. However, for a cost of between $20 and $75, and a couple hours of labor, you can install a small powered vent to pull air directly out of the toilet tank and expel it outside. Because the toilet tank is small, you don't need to move much air, and a tiny fan will do the job. A tiny fan (less than 2" square) costs less than $5, is virtually silent, and draws about 0.1 amp from the battery. (That is a tiny battery drain, but if it is of concern, a pair of 6-volt lantern batteries, or a stack of 8 flashlight batteries, will run the fan 24/7 for about 5 days.) Add a fistful of PVC fittings (maybe another $5), and you are there.
For those who don't like building things, there are commercial fan-vents such as the L'il Stanker ($55). Using one of these gets you up into the $75 total cost range. You still have to install it, but it isn't complicated.
TM puts in a noisy bathroom vent fan that is intended to vent the entire bathroom. Most of the time it should be sufficient to simply vent the toilet tank. Much smaller, easier, and quieter.
For people who don't like the Thetford for other reasons, replacement may make sense. If the concern is smell, though - well, I don't get it. But that is just me.
Bill
One of our members put in a L'il Stanker. His report, plus a good discussion involving many members, as well as links to other material, is here.
http://www.trailmanorowners.com/foru...ad.php?t=11708
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