CO poisoning can be easily mis-diagnosed as the flu. Everyone is at risk from CO poisoning, but some are at higher risk than others. Those with a greater need for oxygen, infants, the elderly and the infirmed, can be affected by lower CO concentrations. CO replaces oxygen in the bloodstream, leading to suffocation. CO poisoning can cause a number of symptoms, depending upon the length and severity of exposure.
Mild exposure can result in a slight headache, nausea, vomiting, and fatigue.
Medium exposure can produce severe throbbing headaches, drowsiness, confusion, and fast heart rate. Extreme exposure can produce unconsciousness, convulsions, heart and lung fatigue, brain damage and eventually death. Do not run a vehicle or other fueled engine or motor indoors, even if garage doors are open. All chimneys and chimney connectors should be evaluated for proper installation, cracks, blockages or leaks. Make needed repairs before using the equipment.