Related Clues:

• Dump emanation
• Get a whiff of
• Sensory stimulant
• Musk feature
• Scratch-'n'-sniff sticker feature
• Trash emanation
• Smell, in a way
• Argon's lack
• Air freshener's target
• Old sneaker feature
• Fascination for Fido
• Bloodhound's find
• Skunk's trademark
• It may be pungent
• Gas leak tip-off