do cigarettes contain carbon monoxide in cigarette smoke harms health Cigarettes contain more than 7,000
Cigarettes contain more than 7,000 chemicals, many of which are toxic. These include formaldehyde, arsenic, tar, ammonia, carbon monoxide, and heavy metals. According to the National Cancer Institute, at least 70 of Smoking and Carbon Monoxide: What Are the Risks? Cigarette Tar PMI Science Carbon monoxide poisoning: Another reason not to smoke Poison Control
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