Around 3 billion people would rely on sources like wood, charcoal, and coal to produce heat. These people suffer from the hazardous pollutants that emerges from these unreliable sources of fuel. Poor indoor air qualities could trigger health problems in the lungs of the exposed. Some symptoms might include: headaches, fatigue, asthma symptoms, dizziness, and allergy. According to WHO, it is estimated that around 4.3 million die each ear from indoor air pollution. Since we spend a lot of time indoors, we should be aware of the pollutants that may be in our surroundings.
posted by: Daniel Kim
http://www.who.int/indoorair/en/
https://www.lung.ca/lung-health/air-quality/indoor-air-quality
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