Why should it? It doesn't kill humans, or at least we really don't attribute very many deaths directly to pollution (even though we know it leads to all sorts of cancers and respiratory issues).

After all, if pollution could kill people, why would anybody modify their truck to "roll coal"? That'd practically manslaughter on a very long time scale.

Why would we be using fossil fuels at all, for cars or for power or for lawnmowers or anything, really. The sale and distribution of fossil fuels would be on the scale of committing genocide.