Smog can be a killer.
Delhi woke up to a blanket of smog on November 7 with air quality touching hazardous levels.
The air quality index was very severe with high particulate matter at a 2.5 level at many places, leading the Indian Medical Association (IMA) to declare a 'public health emergency' in Delhi.
Air pollution poses a major health risk and can cause stroke, heart disease, lung cancer, and chronic and acute respiratory diseases. About 88 per cent of premature deaths occur in the low- and middle-income countries, where air pollution is escalating at an alarming rate.
As the dense smog continues to engulf the national capital, Dr Vikas Maurya from Fortis Hospital, Shalimar Bagh, New Delhi lists how residents can protect themselves from the harmful effects of the smog.
What are the harmful effects of a smog?
What are the necessary preventive measures?