I was thinking that since heterocyclic amines(HCAs) and polycyclic aromatic hydrocarbons(PAHs) are a major, toxic part of air-pollution/car-exhaust-fumes as well as being created by cooking, that rawists would by nature not only be protected against air-pollution somewhat by ingestion of raw omega-3-fats but also by the fact that their raw diet was mostly toxin-free in the first place. Still not an incentive to live in Mexico-City et al, but still it's a point to make.