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- Recognize CO poisoningSudden headache, nausea, dizziness or drowsiness, often in several people at once. Is a heater, boiler or burner on?
- WarningGet outside IMMEDIATELYTake everyone into fresh air. Only open windows or doors on the way if it costs no time.
- Call 112The fire service measures and makes it safe. Afterwards, have the appliance checked by an engineer.
- WarningNever go back for an unconscious personFirefighters have breathing apparatus. Otherwise you'll become a victim too.
- Symptoms can come laterHave everyone who breathed in CO checked by a doctor, even without symptoms.
Checked in October 2026 against the guidelines of the Red Cross, the Dutch Resuscitation Council (2025), the European Resuscitation Council, the Dutch public health institute RIVM and the NHS. This does not replace a first-aid course. If a life is in danger: call 112 straight away.
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