Suzie-Q wrote:
Lately I've begun to smell sewage in one of my bathrooms. Of course
I know that I'll have to call a plumber. What I'd like from
you, though, is ideas about what might be causing it and whether it
might be a high-priced or low-priced fix. I will call a plumber, but
I need to know about how much money I should have available before I
do so! (I've had two high-priced car repairs that have put me in the
red for a short time.) I know this is a very general question, but I
hope someone can do some educated speculation for me.

FYI, I've quit using the offending toilet for now.

Thanks in advance,
Hi,
P trap is dry or vent stack is plugged or blocked?
Tony