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How many floors are there? Look at the main sewer pipe upstairs who has been renovated, the most important thing is to look at the top floor, because the upper mouth of the sewer main pipe is smelly, change the direction or block, the smell can't get out!
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First, the floor drain is odor-proof.
Second, the toilet chooses the smooth inner wall, and the price is basically more than 800 yuan.
Third, the washbasin drain should be deodorized, and the interface between the sewer pipe and the PVC pipe should be wrapped with sealing tape.
Fourth, the ceiling is UPVC or integrated ceiling, and there is no window to install an exhaust fan.
Fifth, if there is an exhaust pipeline, a check valve should be installed.
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And is the drain in the basin blocked?
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Is the sink drain blocked? Is there an exhaust vent sealed again?
There is a water seal in the toilet, and the smell cannot come out. Sometimes the smell comes from other places, most likely the floor drain, and then there is the connection between the basin drain hose and the sewer pipe.
Fill the toilet bowl with water and quickly poke it back and forth at the bottom with a toilet brush.
Step Method.
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