The aftertaste of the range hood or the sealing of the smoke exhaust pipe and the flue is not good. If the smoke exhaust pipe is under the ceiling, it can be sealed with adhesive or sealant. If it is above the ceiling, remove the smoke blocking part of the pipe and use glass glue. It is also possible that the two sides of the exhaust hose are not tightly connected, resulting in falling off or fracture, so that it has no peculiar smell, so it is necessary to replace an exhaust pipe.
First, the smoke pipe and the public flue are not well sealed;
Solution: if the cigarette machine pipe is under the ceiling, it can be wrapped with transparent glue, or sealed with glass glue. If the cigarette machine pipe is above the ceiling, it can be divided into two situations. If it is the overall ceiling, take down a small piece, and then seal it with glass glue. If it is the gusset plate ceiling, then remove part of the ceiling, and then glue it.
The second aspect: the two semicircle activities of the smoke exhaust check valve and the reverse check valve stop. When the exhaust is opened, they stop when the exhaust is closed. However, due to the accumulation of more and more oil, the stop block activity is limited, even not open, and the oil smoke cannot be discharged;
Solution: replace or clean the check valve.
The third aspect: the exhaust hose of the range hood is not tightly connected at both ends, falling off and breaking will cause air leakage;
Solution: replace or tighten the vent hose.
The fourth aspect: the problem of flue. Due to the removal of the flue, the room itself is cracked, blocked, leaking smoke or entering the pipeline upstairs, resulting in the blocked exhaust gas and anti odor. Similarly, if the toilet exhaust problem is also the cause.
Solution: it's hard to solve this problem. It's better to find a property.