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so u dont sufficate and burn ur lungs from breathing in the smoke. smoke and heat rises Smoke rises. Watch cigarette smoke for example. It always spirals upwards or sideways if caught in a draft. By crawling, you reduce the amount of dangerous, hazardous smoke you come in contact with and thereby maximize your chance to escape.
Because smoke is less dense than air, so it rises. By crawling you would limit the amount you inhaled.

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7y ago

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