Formaldehyde is known as a human carcinogen (cancer-causing substance) by the International Agency for Research on Cancer. It is also known as a human carcinogen by the U.S. Environmental Protection Agency (EPA). Formaldehyde in sidestream cigarette smoke is evident in concentrations of up to three times above occupational limits, which readily accounts for eye and nasal … [Read more...] about Formaldehyde is in Secondhand Smoke
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