One of the original names for the cabin air filter that we know today was the pollen filter.
Pollen is easy to filter. These particles range from 10 to 100 microns in diameter. Pollen is an allergen that can cause an allergic reaction in some people.
However, a cabin air filter can remove particles that are much, much smaller. For example, mold and spores can range from 3 to 80 microns in diameter. Like pollen, mold and spores are allergens that cause reactions in just about every person on the planet. Some cabin air filters can effectively remove mold spores from the air.
How small is a virus? Most viruses can only be seen with a high-power microscope. They can range in size from .005 to .3 microns. But viruses hardly ever fly solo. Instead, most need to be carried in liquid aerosol droplets, typically 3 microns in diameter. A superior cabin air filter, like the PurolatorBOSS, captures and filters the virus aerosols.
This video is sponsored by Purolator.