the setting: my own house of thirteen years. the intent: find a solution for our own problem and have this knowledge for future home inspections.
I built this home and did not leave access to the floor beneath a bathroom (we have a crawlspace) so I cannot go down and discover what’s up. Periodically, about once a week, the bathroom gets a smell of, er…trying to think of a good way to say this…<whispers> a womans ‘time of the month odor’. My two grown daughters (who do not live here) and my wife are the main complainers who bring it up. There is nobody living here who has <whispers> 'times of the month things> any more. If a critter died and rotted that would reek for a time and then be gone…not show up every week or so.
I have removed the toilet and installed new wax ring thinking there may be a undiscernable yet odorous leak…nope
I have poured bleach down the little used shower drain thinking maybe the trap dried out and sewer gas is the culprit…nope
We have done a major cleanout of the jet system in the whirlpool tub…nope
Set up fans to super ventilate the crawl space…nope
always comes back everyweek or so. I submit this because someone, somewhere, has had the same problem and found the solution
mike in MN