I know everyone's emphasizing airing your house every day and keeping windows open, but I live on a main road. I wonder about the damage that can be done from letting traffic fumes in, for example. Some schools have non-opening windows when they're onto main roads because they obviously don't think it's healthy.
Anyone else in this situation? Is there anyway to prevent traffic pollution coming in, like some kind of filter? Or maybe it's not that bad and I'm worrying over nothing?