Fuel from discarded plastics comes with a high cancer risk (theguardian.com)

Article title is a bit clickbait-y. Original title: "This ‘climate-friendly’ fuel comes with an astronomical cancer risk"

> the production of one of the fuels could emit air pollution that is so toxic, one out of four people exposed to it over a lifetime could get cancer.

But why would people be exposed to it? It's not like there are no smokestack filtering systems out there, or like there is no law (like the Clean Air Act) that regulates the industrial emissions.