AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/co-alarm

Your carbon monoxide alarm starts beeping. What should you do first?

When a CO alarm goes off, get outside to fresh air first, then call 911.

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  1. Get everyone outside, then call 911 ✔
  2. Open the windows and look for what's causing it
  3. Press the button to quiet it and see if it goes off again

Why: Carbon monoxide has no smell or color, so you can't find it or tell how much is in the air. Get to fresh air first, then call 911 from outside. Every level of your home and the area outside bedrooms should have a CO alarm.

Huh, didn't know that: Every level of your home and the area outside bedrooms should have a CO alarm.

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References

Answer: Get everyone outside, then call 911. Carbon monoxide has no smell or color, so you can't find it or tell how much is in the air. Get to fresh air first, then call 911 from outside. Every level of your home and the area outside bedrooms should have a CO alarm.

  1. CPSC: Carbon Monoxide Fact Sheet www.cpsc.gov/safety-education/safety-guides/carbon-monoxide/carbon-monoxide-fact-sheet
    Immediately move outside to fresh air. Call your emergency services, fire department, or 911.
    Checked 2026-10-09.
  2. CPSC: CO Alarms www.cpsc.gov/Safety-Education/Safety-Education-Centers/Carbon-Monoxide-Information-Center/CO-Alarms
    CO alarms should be installed on each level of the home and outside sleeping areas.
    Checked 2026-10-09.

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