Related Clues:

• Polecat's defense
• Essence
• Olfactory input
• Notability
• Olfactory offense
• Lilac, e.g.
• See 25-Across
• Stink
• Inventory
• Carbon monoxide's lack
• Lead for a Lab
• Whiff
• It may be left in a locker
• Garlic, for one
• Sure target