What two compounds should you avoid exposing your motorcycle helmet to?

The correct answer identifies petroleum products and ozone as compounds to avoid exposing your motorcycle helmet to, due to the potential damage they can cause to the helmet's materials. Motorcycle helmets are typically made from specialized plastics and foams that can degrade when in contact with petroleum-based products, which can lead to a compromise in the helmet's structural integrity and protective capabilities. Ozone, a reactive gas, can also deteriorate the materials in the helmet by causing them to crack or degrade over time, ultimately reducing their effectiveness in the event of an accident.

The other options involve substances that may present risks, but they do not specifically highlight the combination of petroleum products and ozone, which are particularly detrimental. For instance, while aerosols and gasoline vapors can also damage the helmet, they do not encompass the same level of ongoing exposure risk as ozone does. Similarly, paint thinners and alcohols may affect some helmet materials, but they are not as universally harmful as the combination mentioned in the correct answer. Fuels and solvents, while harmful, typically refer to a broader category and may not point as specifically to the distinctive risks associated with petroleum products and ozone in relation to helmet safety.