fda carbon monoxide in cigarette smoke is Carbon Monoxide Levels: Cigarettes vs Heated Tobacco Chemicals in Cigarettes and Tobacco:
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There is also a risk of lung disease, such as asthma or other respiratory conditions, and rare cases of popcorn lung have been linked to certain chemicals in vaping liquids, though these are now banned in many regions and no cases are linked to vaping

1 2 "Tobacco Timeline: The Twenty-First Century -- The New Millenium"

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