4 sentences

1. 我身上的气味很难闻吗？

   wǒ shēn​shang de qì​wèi hěn nán​wén ma?

   Do I smell very bad?

   Source: OpenSubtitles

2. 屋里有一股难闻的烟味儿。

   wū lǐ yǒu yī gǔ nán​wén de yān wèi​r.

   There is an unpleasant smell of smoke in the room.

   Source: Dong Chinese Dictionary

3. 这里有一股难闻的油漆味。

   zhè​lǐ yǒu yī gǔ nán​wén de yóu​qī​wèi.

   There is an unpleasant smell of paint here.

   Source: Dong Chinese Dictionary

4. 屋子里弥漫着一股难闻的臭味。

   wū​zi lǐ mí​màn zhe yī gǔ nán​wén de chòu​wèi.

   A foul smell filled the room.

   Source: Dong Chinese Dictionary