What should I do if the toilet keeps smelling?

That's because the drain pipe is not sealed with a water seal, the solution: is the wash basin drain with a water trap? If not, replace the drainage pipe below 32MM with a stainless steel S-bend sewer pipe, if it is a stainless steel bellows, bend it to make an S bend, and then check the floor drain, if the wind blows up, it is necessary to replace the floor drain with a water seal (more troublesome, because the water seal floor drain is deeper, to break the floor tiles, chisel the ground, and it is easy to cause ground leakage) If it can be operated in the next layer, it is better, as long as the drainage elbow is replaced with P bend or S bend.

It is normal for the toilet to stink, and it is not so stinky when washed every day.

Pay attention to ventilation, cover the floor drain tightly when there are people, and put air fresheners.

After disinfection, it will be odorless if you wash it again.