Related Clues:

• Radon lacks it
• Nostril wrinkler
• Herbicide's target
• A shoe may have one
• Methane's lack
• Lysol target
• Meaning of wavy lines, in the comics
• Cause for opening a window
• Something in the air
• It's often rooted out
• Bloodhound's clue
• Nut sedge, e.g.
• It smells
• What wavy lines mean, in comics
• Sneaker problem