¬Bioaerosols, suspended biological particulate matter in air of which some cause infectious diseases, have become a main cause of concern when dealing with indoor air pollution. ¬These compounds can circulate through a building after being deposited outside near the air intake of a building’s heating, ventilation, and air conditioning (HVAC) system, or after being released inside the building and recirculated through the HVAC system. ¬Ultraviolet Germicidal Irradiation (UVGI) can be used in order to damage the DNA of bioaerosols so they are unable to reproduce (inactivation).