Carbon monoxide (CO) is an odorless, colorless gas that can cause sudden illness or death. Symptoms, often mistaken for the flu, include headache, nausea, dizziness, drowsiness, vomiting, and shortness of breath. Emergency care is critical if exposure is suspected.
CO is produced by burning fuel in cars, stoves, furnaces, and other appliances. Treatment involves administering 100% oxygen or, in severe cases, hyperbaric oxygen therapy. Long-term effects can include memory loss and personality changes, especially in those who lost consciousness.
Preventive measures include installing CO alarms, avoiding gas-powered items indoors, regular chimney cleaning, and servicing appliances. Proper maintenance and ventilation are essential to reduce risk.


