Smoke from firecracker snake=464 cigarettes
October 29, 2016 16:44 IST
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In general, particulate matter is considered dangerous to humans since it can reach the deepest portions of the lung. It is declared as a class 1 carcinogen by the International Agency for Research on Cancer and is also linked to heart disease and respiratory ailments. PM 2.5, 30 times finer than a human hair, is even more dangerous due to its tiny size and ability to accumulate in human organs and the blood.