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The main thing is that there is moist soil, you solve this problem first, and if necessary, use some pesticides.
First, first confirm the source of the odor, whether it is from the sewer or the toilet. >>>More
It must be that the waterproof layer is not done well or there is a problem.
Does it refer to a hole in the ceiling? Let's check the hole, and drill into it for maintenance when it is repaired.
Now the building design has eliminated the previous U-shaped trap, so the problem of odor is getting more and more serious! >>>More
1. Newly installed water heaters, gas water heaters and installation pipelines and accessories are all industrial products, and the parts will be stained with some tiny particles such as grease, anti-rust oil, rubber, etc., which will be released after being heated when the water heater is working, so there will be a slight taste. >>>More