Do PCBs contained in oil contribute to airborne health hazards?

The assertion that PCBs (polychlorinated biphenyls) contained in oil do not contribute to airborne health hazards is not accurate. PCBs are environmental contaminants that can volatilize into the air under certain conditions, which can potentially lead to health risks.

PCBs can become airborne through different mechanisms, such as when oil containing PCBs is heated or agitated, which can release smaller PCB particles or vapors into the environment. These airborne contaminants can pose significant health risks if inhaled, as they are known to have toxic effects, including potential carcinogenic properties.

In examining other options, the idea that PCBs only create health hazards in high concentrations or if spilled does not capture the full scope of their risk. Even small amounts of PCBs can be detrimental to health, especially over long periods of exposure. Therefore, it's essential to recognize that environmental conditions and PCB handling can lead to airborne hazards, regardless of their concentration or whether a spill has occurred.