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Generally speaking, the bottom of the toilet is S-type, and the other P-type is used, and the S-type water seal is slightly deeper according to the size, but whether it is S-type or P-type, as long as it is installed correctly, it can seal the smell.
If you want to look good in the bathroom shower, you can consider hiding the floor drain, but remember to choose a longer one, collect the water faster, if you can, use a double hidden floor drain, the drainage will be faster. If you want to make things simple, just use the ordinary floor drain alone. The valve core should be durable and choose the U-shape, but the U-shape is recommended to be equipped with a double floor drain, because the U-shape drains slower. >>>More
The interface is not sealed, although the problem of the sewer pipe is solved, but the sewer pipe and the ground interface are not sealed, it will still smell bad.
This situation is not necessary. If it does, it will affect the flushing effect of the toilet.
Hygiene: What is the distance of the toilet drain trap?
The underground ones are not easy to smell, and the above-ground ones are easy to clean, and I still advocate the underground ones.