Seems intuitive, I have always had a strong negative reaction to inhaling diesel exhaust / particulate matter. Nasty stuff

I will never forgive VW for cheating on diesel emissions. That corruption went so far throughout the org the entire company should've been criminally indicted and shut down.

The finding is that older diesel engines and renewables produce measurable adverse effects in microglial stem cells, but new diesel formulations in new engines do not. The implication is that policy-makers should accelerate the transition to newer diesel and abandon reusable diesel. Since Europe has been gung-ho for diesel for decades, this finding could have significant regulatory and market effects.

Most people who don't wear a good mask have no idea of the bad smells on the roads. Once you start wearing a mask there for a few months, you then become sensitive to smelling all the bad smells on the roads that you otherwise tune out. I mean the smell is then noticeable if you momentarily take the mask off one day. You then realize the horror of how everyone else has so completely tuned it out to the detriment of their health.

Not to mention breathing in all the microplastics from tire wear dust...