The word airborne is an adjective. Airborne means (1) moved or conveyed by or through air.
The following articles and web pages elaborate on the word airborne.
Air Filters
Air filters help clean and purify the air around us. Learn about the different types of air filters and how they remove odors and airborne contaminants.
https://www.AirCleaners.us/air-filters.htm
Air Purifiers
Air purifiers filter dust, smoke, pollen, pet dander, mold spores, and other airborne particulates in the air. Learn more about air purifiers and how they work.
https://www.AirCleaners.us/air-purifiers.htm
HEPA Filters
HEPA filters are designed to filter the air by trapping 99.9% of airborne particles, such as dust, pollen, and tobacco smoke. HEPA stands for High Efficiency Particulate Air (filter).
https://www.HEPAFilters.us/
The following digital image illustrates the word airborne.