EVs use regenerative braking. So they hardly produce any brake particulates. And the tire particulates are heavy so they don't stay airborn for nearly as long. At low speeds, tires don't wear out as quickly.

Europe has quite a few cities where traffic is increasingly discouraged from going to the inner cities. Cities like Paris and London are much transformed from what they used to be and it shows in the health statistics.

It's not just the particulates but also nitrous oxides (nox) produced by combustion engines. Nox is correlated with lots of health issues. Take it away and you see lower rates of chronic lung issues, cancer, development issues with kids, etc.

But yes, tires are also an issue. But a fairly minor one to anything coming out of a combustion engine.

Mass transit indeed is nice in big cities. Removes the need for taking the car.