Question

Why should we not sleep on a closed room with a coal fire burning in it?

Answer 1

because in that room the burning coal will release smoke and carbon dioxide and will not get sufficient oxygen for breathing . we will fill suffocated...

Answer 2

Hey mate here is your answer ✍✍....
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Due to presence of carbon dioxide , which produces on buring of coal. It can produce smoke , carbon dioxide and Carbon monoxide which are harmful gases . when we breathe in this harmful gases mix with haemoglobin and form a complex substance called carboxy heamoglobin . It causes suffocating and dealth.....

hope it will help you please mark it as braniliest ☺☺☺☺☺☺☺☺☺☺
@ be brainly ❤❤
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