抽油煙機的反味可能未在排氣管和煙道處密封。 如果排氣管在天花板下，則可用膠帶或密封膠密封。 如果它在天花板上方，則取下管道的一部分并用玻璃將其粘上。 排氣軟管的兩側也可能未緊密連接，導致其脫落或折斷，使它們聞起來很難聞，因此應更換排氣管。
The odor of the hood may not be sealed at the exhaust pipe and flue. If the exhaust pipe is under the ceiling, it can be sealed with tape or sealant. If it is above the ceiling, remove part of the pipe and glue it with glass. The two sides of the exhaust hose may not be tightly connected, causing them to fall off or break off, making them smell bad, so the exhaust pipe should be replaced.
個方面：排氣管和公共煙道沒有密封；
The first aspect is that the exhaust pipe and the public flue are not sealed.
解決方案：如果引擎蓋管在天花板下，請考慮使用透明膠帶將其緊緊包裹，或者用玻璃膠或密封劑將其密封。 如果引擎蓋管在天花板上方，則有兩種情況。 如果是集成天花板，則取一小塊并用玻璃膠密封。 如果是板條形天花板，請去除天花板的一部分以使其膠粘。
Solution: If the hood tube is under the ceiling, consider wrapping it tightly with transparent tape or sealing it with glass glue or sealant. If the hood tube is above the ceiling, there are two cases. If it is an integrated ceiling, take a small piece and seal it with glass glue. If it's a slab ceiling, remove part of the ceiling to make it sticky.
第二方面：抽油煙機的排氣風門，止回閥的兩個半圓形活動閥瓣，在空氣排出時打開，在停止時關閉，但油膩越多，運動受限 襟翼，即使不打開，煙霧也無法排出；
Secondly, the exhaust valve and two semi-circular movable discs of the check valve of the lampblack machine are opened when the air is discharged and closed when the air is stopped, but the more greasy the lampblack machine is, the movement restriction flaps can not be discharged even if they are not opened.
解決方案：更換單向閥或清潔單向閥。
Solution: Replace one-way valve or clean one-way valve.
第三方面：抽油煙機的排氣軟管，兩端之間的連接不嚴密，脫落，斷裂會引起漏氣和反味；
Third, the exhaust hose of the lampblack machine is not tightly connected between the two ends, falling off and breaking will cause leakage and odor.
解決方案：更換排氣軟管或擰緊排氣軟管。
Solution: Replace or tighten the exhaust hose.
第四方面：煙道問題，由于煙道的拆除，破裂，堵塞，煙霧或房間上樓的煙泄漏，或將管道更換成管道，導致煙氣吸收不良，煙氣阻塞，產生反味。 出于同樣的原因，如果浴室的排氣管也是問題的原因。
Fourth aspect: flue problems, due to the removal of flue, rupture, blockage, smoke or smoke leakage upstairs, or the replacement of pipes into pipes, resulting in poor absorption of flue gas, smoke blockage, produce a bad smell. For the same reason, if the exhaust pipe in the bathroom is the cause of the problem.
解決方法：這個原因比較難解決，好找到一個屬性。
Solution: This reason is more difficult to solve, it is better to find an attribute.
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