Art wrote:
Is there a bathtub? Every few weeks you need to let some water into
the
drain to keep the trap filled. Same with the sink. Traps under
sinks and
tubs stop gasses from the sewer only if there is water in them.



Hi Art. Thanks for letting me know about this. I ran the bathtub water
and sink after reading your post. Until reading the replies on this
thread, I didn't know anything about those traps.