The exhaust hood in my kitchen annoys me a lot

It is enough to install a smoke extractor at the entrance of the public area. There is smoke and can't get in at all, it is very easy to use, and the products of Zhonglian Shanghui are very good, and it will be solved for dozens of yuan.

Whether it is a residence or a business, there are regulations on smoke exhaust, generally the flue in the building is open to the roof of the building, and the restaurant even requires the smoke to be discharged into the sewer, and direct outdoor is not allowed. You really can't take care of this.

Discuss a peaceful settlement with your neighbors, after all, your neighbors will look down and not look up.

If the range hood is working normally, but this happens after it is turned off, it is generally the reflux baffle of your range hood that fails or is damaged because it is greasy and sticky, and does not play a role in blocking the return air, so that the downstairs smoke enters the exhaust pipe of your range hood through the public flue and then enters the kitchen from the range hood. The solution is to check and repair the baffle, and the second is to turn on your range hood to remove it when there is fume backfilling.

It depends on the exhaust pipe that matches the exhaust vent of the hood you purchased.