I don't know where you get the idea that "no one gives a shit about inhaling diesel fumes". That's an odd assertion to make.

In comparison to "ban smoking from parks", "ban electronic cigarettes", no one seems to give a shit. In fact I haven't seen any move to limit the fumes in any way.

Sure we do, that's why we have emissions laws, catalytic converters, and most of the population running on unleaded gasoline.