water poured down the toilet flange, is not the same thing as water poured down other pipes that have P traps. A toilet's P trap is inside the toilet bowl itself, so the flange is on an open pipe with no water seal like the others that have P traps on them. Put a rag in it, tape it off, seal it shut.Originally Posted by joengn
- Also put a sock in any other pipe that is open and has no P trap.
- Also put a sock in any vent pipe that is open.
Once these are all sealed off, see if that stops the smells.