smog
/smɑɡ/
noun
- A thick, hazy form of air pollution caused by a mixture of smoke, fog, and chemical fumes, often found in cities.
- The city was covered in thick smog, making it hard to see the buildings across the street.
- Many people wear masks outdoors to protect themselves from the smog.
- Factories and cars are the main sources of the smog that hangs over the valley.
Synonyms