| 臭氧 | chòu yǎng | ozone (O₃) | |
| 臭气 | chòu qì | stench | |
| 臭氧层 | chòu yǎng céng | ozone layer | |
| 恶臭 | è chòu | stink | |
| 臭虫 | chòu chóng | bedbug (Cimex lectularius); tick |
| 乳臭未干 | rǔ xiù wèi gān | smell of mother's milk not yet dried (idiom); immature and inexperienced; still wet behind the ears | |
| 口尚乳臭 | kǒu shàng rǔ xiù | young and inexperienced (idiom) |
| 1 | These rotten eggs are inedible. | |
| 2 | This room smells bad. | |
| 3 | This type of fuel emits a toxic odor. | |
| 4 | The doctor suggested she brush her tongue to avoid bad breath. | |
| 5 | His shoes made the whole room stink. |