Why does the bathroom smell bad in rainy weather?

On rainy days, the humidity and air pressure increase, resulting in poor ventilation and exhaust, and a large amount of odor will overflow.

Factors:

1·

The traditional floor drain only realizes the drainage function, but does not realize the sealing function

, water sealing and return Water bending does not prevent odor return.

2·

The floor drains I choose for the bathrooms I decorate are all unqualified floor drains that do not even have water seals and cannot prevent odor return at all.

3·

Most of the newly built buildings have even canceled the water bends, making the odor return even more serious.