drei
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Help!
When the upstairs toilet/shower are used, the downstairs bathroom directly below it smells. The house is 14 years old and there hasn't been any construction. There is no septic tank here. There is a vent/fan for each bathroom.
This is a new problem. The sewer smell isn't there unless the upstairs bathroom is used.
What would be the first thing to check?
When the upstairs toilet/shower are used, the downstairs bathroom directly below it smells. The house is 14 years old and there hasn't been any construction. There is no septic tank here. There is a vent/fan for each bathroom.
This is a new problem. The sewer smell isn't there unless the upstairs bathroom is used.
What would be the first thing to check?