Last seen in:
- USA Today - Feb 14 2016
- Thomas Joseph - King Feature Syndicate - Oct 31 2012
- Eugene Sheffer - King Feature Syndicate - Feb 21 2012
- Universal - Oct 6 2011
- Universal - Jan 10 2011
- Thomas Joseph - King Feature Syndicate - Feb 12 2010
- Newsday.com - Sep 25 2009
- Thomas Joseph - King Feature Syndicate - Dec 11 2008
- Thomas Joseph - King Feature Syndicate - Sep 20 2008
- USA Today - Dec 22 2006
Related Clues:
- Air quality concern
- Beijing problem
- Air condition
- Air that makes you go [cough, cough]
- Air problem
- Target of clean air laws
- Unhealthful skyline obscurer
- Component of urban air
- Cause of a bad air day?
- Feature of a bad air day
- Industrial haze
- Urban concern
- Atmospheric pollution
- Reason for an air quality alert
- Houston air problem