It is intermittent and smells like an old filthty latrine. Dead Fish? Hard to describe. There is no pattern to it....and I cannot make it "erupt". The room fills with this foul odor for about an hour or so.....then goes away for about 3 or 4 days.
We have had inspectors, plumbers & contractors through here checking every pipe, vent, and looking under the house (has about a 2 foot crawl space.)
We are totally stumped & so are the plumbers including the City Sewer dept. I cannot live in that room.
I am at wits end......Anyone have a clue as to what to look at next? Please send your ideas.
Stinky in Fremont, CA