. . . . . "occur due to exposure to poor IAQ. The Act intends to ensure that the use of True (airtight) HEPA Filter vacuums that prevent the escape of dust and biological agents from the vacuum unit, and minimize the adverse effects of re-suspended dust, will reduce the concentration in indoor air of biological agents such as bacteria, viruses, fungi, pollen, dust, dust mites and other insects, animal dander" .