is cigarette smoke heavier than air and yet it floats up because it's hot Prolonged exposure to the air

Prolonged exposure to the air in the Indian capital is equivalent to smoking more than 2 packs of cigarettes a day, experts say. Breathing wildfire smoke like smoking cigarettes imperfect, but effective comparison Breathing in Indian cities is equivalent to smoking multiple cigarettes a day. As Delhi's air quality worsens, a look at how many cigarettes you are passively smoking just by breathing in India's You could breathe in more than 8 cigarettes worth of bad air today FOX 13 Seattle

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