If a person is living in Delhi, they are inhaling as much PM-2.5 as there is in 40 cigarettes. Meanwhile, the number is 29 for Haryana, 10 for Bihar, 9.5 for Uttar Pradesh, 7.5 each for Rajasthan, West Bengal and Odisha, 6.5 for Punjab and 5.5 for Madhya Pradesh. The national average is eight.