- Have everyone leave the building right away. Leave doors open as you go. Shut down heating and cooking equipment.
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Use a neighbor's telephone to report the Carbon Monoxide (CO alarm warning, following the instructions you received from the fire department when you bought the alarm.
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Be on the lookout for any symptoms of CO poisoning.
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Call a qualified technician to inspect all equipment.
Get immediate medical attention if anyone shows signs of CO poisoning.