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Carbon monoxide poisoning can be especially dangerous for people who are sleeping or intoxicated. People may have irreversible brain damage or even be killed before anyone realizes they have been exposed to Co dangers.
When to see a doctor
The warning signs of carbon monoxide poisoning can be subtle. But the condition is a life-threatening medical emergency. If you think you or someone you're with may have carbon monoxide poisoning, get into fresh air and seek emergency medical care.
Install and maintain CO alarms inside your home to provide early warning of CO. Install CO alarms in a central location outside each separate sleeping area and on every level of your home. Use portable generators outdoors in well-ventilated areas away from all doors, windows and vents. Make sure vents for the dryer, furnace, stove and fireplace are clear of snow and other debris.