2 sentences for 油烟 (yóu​yān — cooking fumes)

1. 厨房里的油烟味很重。

   chú​fáng lǐ de yóu​yān wèi hěn zhòng.

   There is a strong smell of cooking fumes in the kitchen.

   Source: Dong Chinese Dictionary

2. 厨房需要安装排气扇来排除油烟。

   chú​fáng xū​yào ān​zhuāng pái​qì shàn lái pái​chú yóu​yān.

   An exhaust fan needs to be installed in the kitchen to remove cooking fumes.

   Source: Dong Chinese Dictionary