We have a 2011 Big Country 3250TS and just completed our second outing of the summer in it. We are experiencing a strong sewer smell when flushing the toilet. This seems to occur more noticeably when the vent over toilet is open with fan running which is of course the desireable time to use the fan. Without going into additional morbid detail I will only add that this is not just a slight odor. It drives you outside until it clears. I'm quite sure the roof vent isn't plugged because the unit is virtually new and hasn't been under any trees etc.
Is there anyone out there with similar experience and what was done to fix the problem.
Is there anyone out there with similar experience and what was done to fix the problem.