Comment by dzhiurgis

HEPA filters stop dust particles and not those tiny organic molecules that cause the smells. Filters for these exist as well, usually used in respirators, but those need to be exchanged pretty frequently and are not cheap.

We love privatising the benefits and socialising the harms of everything.

If the exhaust had to go through the cabin so the driver got the worst of it, car exhaust would be the cleanest air on the planet within months and/or alternatives to cars would rocket.

But as long as it’s other peoples health affected, meh.