Interesting. Have you ever been exposed much to Benzene?
Probably. Propane, gasoline, kerosene, heating fuel, coal, diesel fuel, wood preservative, mothballs, aromatic tree pitch resin, various grades of motor oil, etc., etc. Such aromatic substances are too common and too pervasive among human habitation, and too essential to activities of daily living to be considered a major factor that would predispose to cancer.
I don't see any significant harm to vegetation or wildlife resulting from the presence of such compounds either.
I would conjecture that the main hazard of such chemicals is caustic burns or burning from accidental fires.
People are full of shit out on the farm, and they go looking for a lawyer, and they want to live a nice clean city life.