Methylchrysene

Incomplete combustion from vehicle and diesel exhaust, residential wood/coal burning, industry, and tobacco smoke; found in coal tar, creosote, soot, and grilled or smoked foods [1][2][4].

Breathing polluted air or smoke; skin contact with soot, used motor oil, or coal‑tar–based products; eating charred foods; incidental ingestion of contaminated dust or soil [1][2].

PAHs like methylchrysenes can bind to DNA, cause mutations, and produce tumors in animals; some are classified as possible human carcinogens [1][3].

Smokers; people near heavy traffic or industrial sites; workers with coal tar, asphalt, foundries, or diesel exhaust; firefighters; young children and pregnant people may be more susceptible [1][2][4].

Don’t smoke; ventilate and avoid charring food; limit time near idling engines; wet‑wipe dust and wash hands; use workplace controls/PPE; follow local advisories on contaminated soil, ash, or air quality [1][2][4].