Related Clues:

• Warning device
• Sleeping disorder
• Security system part
• Attention-getting sound
• Breathless state?
• Sleep clinic study
• Sleeping problem
• Snorer's problem, maybe
• Startle
• Affright
• It might help you get up
• Word with smoke or fire
• Item that may be connected to a car's ignition
• Smoke signal?
• Eye opener?