2 sentences

1. 厨房里有一股瓦斯味。

   chú​fáng lǐ yǒu yī gǔ wǎ​sī wèi.

   There is a smell of gas in the kitchen.

   Source: Dong Chinese Dictionary

2. 警察用催泪瓦斯驱散了抗议的人群。

   jǐng​chá yòng cuī​lèi wǎ​sī qū​sàn le kàng​yì de rén​qún.

   Police used tear gas to disperse the crowd of protesters.

   Source: Dong Chinese Dictionary