Even if you're not driving to get to work, simply going outside and taking any form of transport (even walking) increases your risk. And for most people, if yo

Even if you're not driving to get to work, simply going outside and taking any form of transport (even walking) increases your risk. And for most people, if you can reasonably walk to work, you're probably going to be exposed to all sorts of particulates from the roadway you're likely walking along. Exhaust fumes, rubber particulates..etc, none are exactly health-boosters.