Related Clues:
- Word after "Lavender" and "Purple," in song titles
- Urban cause of some lung issues
- Choking fog
- Heavily polluted air
- Brown sky cause
- Clean Air Fund target
- Hollywood haze
- Air quality factor
- Haze over an industrial park
- Blurry mental state
- Air that can make one cough
- __ trail
- Gaseous matter
- Contrail, essentially
- LA air concern