What are the symptoms of carbon monoxide poisoning?

Unfortunately, carbon monoxide poisoning symptoms are often passed over because they’re similar to the flu. Here are a few of the symptoms to watch for.

Mild exposure:

Headaches
Fatigue
Nausea

Higher exposure:

Severe throbbing headache
Drowsiness
Disorientation
Confusion
Accelerated heart rate

Extreme exposure:

Unconsciousness
Convulsions
Cardiorespiratory failure
Coma
Death