When the range hood is turned on, there is wind and odor on the toilet ceiling

Smoke poured.

It is best to install an anti-reverse smoke valve at the junction of the range hood and the public flue, this device is the same as the one on the hood, it is open outward, when the hood machine is working, the two blades are blown open, so that the wind blows outward, when the hood stops working, if the public flue blows back if there is wind, the two blades are closed, if the blade is broken or there is no anti-reverse smoke valve, the odor in the public flue will be poured back.

When the range hood is opened, there is wind and odor on the toilet ceiling, and this phenomenon should be that your flue is not strict, and there is a leakage place, you should check it, and then check the smoke pipe.

Conduct troubleshooting.

Your problem is that a lot of housing exists. You're kind of a caring person.

First of all, the kitchen window should be opened to exhaust the fumes, and at the same time, the oxygen should be supplemented to expel carbon dioxide. If it is a separate kitchen, the kitchen door should be closed. In this way, the air pressure in the room does not become low, so that the exhaust pipe in the toilet can return air.

At the same time, it is necessary to do a good job of sealing the outer ring of the exhaust pipe of the toilet and the counterflow choke in the pipe.

The flue is not tight, and there is a leak.