Is already know BJP in Delhi, air pollution may election issue that was why centre not addressing in massive level. Odd or Even; anytime Modi did not address this problem of the capital of India in the last few years.
http://www.indilivenews.com/2019/11/air-pollution-may-drive-upcoming-delhi.html
http://www.indilivenews.com/2019/11/air-pollution-may-drive-upcoming-delhi.html