Related Clues:

• Possible cause of heavy breathing
• Visibility obstacle
• Light fog
• Makeup of some banks
• Cloud around Niagara Falls
• Pea soup, e.g.
• Seaside phenomenon
• City haze
• L.A.'s haze
• Sight inhibitor, often
• Pea-souper
• L.A. issue
• Feature of some horror films
• ___ machine
• Niagara sight