2 sentences for 悶 (mēn — smother)

1. 先把锅盖上闷一会儿。

   xiān bǎ guō gài shàng mēn yī​huì​r.

   Cover the pot first and let it steam for a while.

   Source: Dong Chinese Dictionary

2. 难怪她要我们趁他睡觉时闷死他。

   nán​guài tā yào wǒ​men chèn tā shuì​jiào shí mēn sǐ tā.

   No wonder she wanted us to smother him in his sleep.

   Source: OpenSubtitles