03-16-2016, 07:26 PM
It wasn't so long ago that we didn't have "cabin filters". I don't recall any dread diseases being eliminated due to the filters. As I recall Saab was the first company to market them as a way of reducing exposure to pollen as you were driving through different areas. What began as marketing hype has now become copied so that many folks now think of it as a necessity without even thinking about it. Bear in mind that walking around outside in the fresh air without a cabin filter is not particularly hazardous.