The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as “flu-like.” If you breathe in a lot of CO it can make you pass out or kill you.
If the carbon monoxide concentration in the air is much higher, signs of poisoning may occur within 1-2 hours.
A very high carbon monoxide concentration can even kill an exposed individual within 5 minutes.
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