Yes, carbon dioxide (CO2) can be dangerous in high concentrations, particularly in enclosed or poorly ventilated spaces. CO2 is a natural component of the Earth's atmosphere and is essential for sustaining life on our planet. However, at elevated levels, it can cause harm to human health and even be life-threatening.
The concentration of CO2 is typically measured in parts per million (ppm). The safe and normal outdoor level of CO2 is around 400-450 ppm. Indoors, the concentration can vary based on ventilation and the number of occupants. It's generally recommended to keep indoor CO2 levels below 1000 ppm to maintain good air quality and avoid discomfort.
As CO2 levels continue to rise in a confined space, several symptoms can occur, ranging from mild to severe:
1000-2000 ppm: Occupants may experience drowsiness, headaches, and a feeling of stuffiness.
2000-5000 ppm: Individuals may suffer from increased breathing rate, decreased cognitive function, and noticeable fatigue.
Above 5000 ppm: At these concentrations, people may experience severe headaches, dizziness, shortness of breath, and an increased risk of unconsciousness. In extreme cases, it can lead to asphyxiation and death.
However, it's crucial to understand that these levels can vary based on individual sensitivity and exposure time. The threshold for acute effects may vary from person to person. Also, different occupational health and safety organizations may have specific guidelines and limits for CO2 exposure.
To avoid dangerous CO2 levels indoors, it's essential to ensure proper ventilation, especially in confined spaces or areas where CO2 emissions are higher, such as near industrial processes or poorly maintained heating systems. Monitoring CO2 levels can also be helpful in maintaining a healthy indoor environment. If you suspect a CO2-related issue, it's essential to take appropriate actions to ventilate the area and seek professional advice.