AMRITSAR, OCTOBER 20: Farmers burn straw stubble after harvesting paddy crops in a field on the outskirts of Amritsar.Image by Narinder Nanu/AFP via Getty Images
NEW DELHI, OCTOBER 28: A man wearing a mask runs past the India Gate on a smoggy morning in New Delhi.Image by Adnan Abidi/Reuters
NEW DELHI, OCTOBER 31: Sales of masks, purifiers are sky-rocketing this season. A duo steps out in sophisticated pollution masks on a smoggy evening in New Delhi.Image by Anushree Fadnavis/Reuters
NEW DELHI, NOVEMBER 1: Students show off masks given to them at an event by Delhi Chief Minister Arvind Kejriwal, at Rajkiya Pratibha Vikas Vidyalaya, Civil Lines.Image by Sanchit Khanna/Hindustan Times via Getty Images
Bangladesh"s cricket bowling coach, Daniel Vettori, was seen wearing a pollution mask during a practice session, ahead of the team&rsquos T20 cricket match against India on Sunday.Image by Anushree Fadnavis/Reuters
NEW DELHI, NOVEMBER 2: Those who work outdoors are among the worst-hit. Here, Delhi policemen are seen donning pollution masks as heavy smog engulfs Delhi Gate. The air quality index (AQI) ...Image by Biplov Bhuyan/Hindustan Times via Getty Images
GURUGRAM, NOVEMBER 3: A fire department personnel sprays water on trees at Old Delhi road, in an effort to curb the effects of the thick pollution, near Atul Kataria Chowk.Image by Yogendra Kumar/Hindustan Times via Getty Images
NEW DELHI, NOVEMBER 3: Children wear masks as they play at India Gate Lawns, ironically, a place to otherwise get some fresh air.Image by Sushil Kumar/Hindustan Times via Getty Images
NEW DELHI, NOVEMBER 4: A civil defence volunteer endorses chief minister Arvind Kejriwal&rsquos odd-even scheme to curb pollution, which restricts vehicle activity based on registration pla...Image by Danish Siddiqui/Reuters
