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In this Friday, Nov. 11, 2016, photo, head of Breath Easy company, which provides solutions for pollution to individual homes and offices, Barun Aggarwal, talks to the Associated Press in New Delhi, India. When Aggarwal first started his business in 2013 he had no customers for months. Later that year the World Health Organization report describing Delhi as the world's dirtiest city was released. This year that number he expects to hit close to 5,000 customers with more local residents looking for solutions for their homes, Aggarwal said. (AP Photo/Manish Swarup)

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