Related Clues:

• Nostril nudger
• A dog may pick one up
• It may be fishy
• Something carbon monoxide lacks
• Musk quality
• Nasal offense
• What a bloodhound follows
• Breath mint target
• Gas-leak evidence
• Skunk output
• Effluvium
• Foul emanation
• It's in the dumps
• Something picked up in a gym
• It's down in the dumps