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Globally, indoor air pollution is a major concern for people, particularly in urban areas where pollution levels are typically higher. According to the World Health Organisation (WHO), indoor air pollution causes around 4.3 million deaths annually, making it a critical public health issue. Recently, a study also revealed that air pollution, a warm bedroom, and high levels of carbon dioxide and ambient noise may all adversely affect our ability to get a good night’s sleep.

source https://timesofindia.indiatimes.com/gadgets-news/understanding-the-importance-of-bedroom-air-quality-and-how-to-improve-it/articleshow/101387959.cms