Related Clues:

• The "D" of LED
• Smoke director
• Fireplace duct
• Pipe for smoke removal disappeared, we hear
• Pipe for channelling smoke
• Reportedly took off chimney
• Light-emitting ___
• LED component?
• LED's "D"
• Fireplace shaft
• Part of 36-Across
• Escape illness with drug
• Reportedly moved fast in Tube?
• "D" of LED