[wolco2]

It is not as simple as the amount of dust/dirt in the air.

Studies have found those living close to a highway or busy street have an increased chance of dying. The type of particulate becomes heavy more deadly.

I suspect the same effect is happening here.

[jungletime]

I read before that tires actually degrade and that contributes to pollution. I mentioned room air filters, because that seems like it would be a wise investment for people that live close to highways, or people that spend a lot of time in indoors like programmers.

So that maybe someone with a room air filter can comment on which ones are worth getting.

[Gibbon1]

I saw and posted a link to a paper that discussed where automotive particulates come from, with estimates for each. I think brakes and tires account for 5-10% each. Most of it comes out the exhaust pipe. Also seen some articles that say that cooking with natural gas creates a lot of indoor pollution.

Say to me getting rid of gasoline and diesel cars will help a lot. Also getting rid of gas stoves and furnaces would also help.

One thing I don't see talked of much, driers. The exhaust from gas driers to me seems like something really dodgy.