What is the Problem?
High exposure to CO2
People with asthma and respiratory illnesses can have difficulty breathing in a room with a high CO2 content because it limits the amount of oxygen that enters the lungs. At high levels, the carbon dioxide itself can cause: Headache, dizziness, nausea and other symptoms. This could occur when exposed to levels above 5,000 ppm for many hours. Exposure to concentrations around 40,000 ppm is immediately dangerous to life and health. These levels of CO 2 can cause asphyxiation as it replaces oxygen in the blood. CO 2 poisoning, however, is very rare .
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