Last seen in:
Related Clues:
- Santa's suit covering, maybe
- Fine, black stuff
- Feature of a bad air day
- Industrial haze
- Urban concern
- Film about a furnace
- Atmospheric pollution
- Reason for an air quality alert
- Sweep's target, perhaps
- Houston air problem
- Factory overhead?
- Chimney blackener
- Metropolitan hangover?
- Carbon black
- Hazardous haze