Related Clues:

• Nostrils
• Blowholes?
• Breathing passages
• Air-passage ends
• Nasal openings
• Bodily cavities
• Nasal passages
• Cavities that dentists don't fill
• Allergies often affect them
• Holes in the head?
• Holes in your head
• Blow holes?
• They're often sensitive to allergens
• Nose openings
• They may be cleared with a spray