Possible Clues:

• Relieve a situation of tension
• Get rid of kitchen smells to relieve tension?
• Use an extractor fan to remove any misunderstandings
• Lower the temperature and reduce pollution?
• Deliver hire car late and settle the difference
• Resolve bad feeling and give approval for song
• Dispel hostile feelings
• Dispel controversy or tension
• A row may get results anti-pollutionist wants
• Resolve a situation