Why are people suddenly talking about IAQ?
The reason is indoor air quality in India; especially Delhi has become very poor. Over a million people in India die every year because of indoor air pollution, among st the highest in the world. Unlike many western countries, India does not have any norm for indoor air pollution, which mandates emission norms for home appliances such as refrigerators, air-conditioners and bread toasters and a limit beyond which dirty air inside homes can be bad for one's health. The World Health Organisation (WHO) warned that healthier homes and workplaces could prevent around 1 million deaths, globally, a year, and explicitly singled out indoor air quality as a factor.