Related Clues:
- Fog polluted by smoke
- A mixture of smoke and fog
- Dirty mixture of smoke and fog
- Sounds as if the whole of this makes inroads
- Urban miasma
- Type of air pollution
- Subject of an exhaustive E.P.A. study?
- Urban bane
- EPA topic
- Houston problem
- Producer of a blowout, maybe
- Try writing about pollution
- Factor in an air quality rating
- Pollution - 24 down!
- Air pollution first to suffocate Tiddles