In a suspected carbon monoxide incident, the immediate action is to?

• A. Evacuate to fresh air and call emergency services
• B. Continue normal activities
• C. Check with a personal CO detector and decide
• D. Wait for symptoms to worsen

Answer: (A)

In a suspected carbon monoxide incident, the priority is to get everyone out of the exposure and to fresh air, then call emergency services. CO is colorless and odorless, so you can’t rely on feeling fine to stay put; moving to fresh air reduces inhalation quickly and safely, which is crucial because poisoning can develop even before symptoms appear. Once outside, call for professional help so responders can assess the situation, check for continued source risks, and provide any necessary treatment or rescue.

Relying on a personal CO detector to decide whether it’s safe to stay can be misleading, since detectors may be placed incorrectly, fail, or not alarm at the exact levels that pose danger. Waiting for symptoms is risky because exposure can cause dizziness, headaches, confusion, or loss of consciousness before you notice anything unusual, and delays can be life-threatening. If someone becomes unconscious or symptoms worsen, emergency services should be involved immediately and, if trained, appropriate first aid should be provided while awaiting responders.