Related Clues:

• Hunting dogs pick them up
• They might waft in
• Smells, pleasant perhaps
• Good smells
• Unseen attractions
• Coffee and fresh-baked cookies have them
• Unseen air travelers
• Things that waft
• Some memory triggers
• Trails can give awareness on the radio
• They may be picked up by dogs
• Factors in wine competitions
• They hang around in coffee shops
• Smells of money, say
• Gets wind of American cash being loaded on board ship