Our Buick has a separate cabin air filter that keeps us kind of safe in there too, but on days like this even that struggles. Like yous said, you can taste it as soon as you go outside. I heard stories that up in the UP the ash was coming down like snow in some areas. My wife read that book I think. I just recently started another Michael Connely book and I am also just about halfway through the book Lucky that they are making an Apple TV Plus show out of.