Metaphorically, every Hyderabadi smoked at least 1.75 cigarettes a day all through the last one year. At least that’s what the latest PM 2.5 levels of the city indicate, if physicists Richard Muller and daughter Elizabeth Muller’s 2015 method of measuring air pollution is considered.

from Times of India https://timesofindia.indiatimes.com/city/hyderabad/hyd-air-like-smoking-2-cigarettes-a-day/articleshow/86465897.cms