Related Clues:
- Pollution haze/fog
- Pollutant haze
- Pollution finally chokes cat
- Slight mist
- Pollution fog
- Sleeping principally beside cat — that's bad for the chest
- Thick polluted mist
- Mexico City sight
- Special meeting of government leaders has impact on the environment
- Blanket produced in Mexico City
- Beijing bane
- Concern of 11-Across
- Run through the gantlet, say
- "Purple ___" (Hendrix classic)
- Confusion caused by lack of clarity