Negative ionizers, also referred to as ion generators or air ionizers, are devices meant to improve air quality by releasing negatively charged ions in the environment. These ions adhere to airborne particles for example dust, pollen, smoke, and bacteria, causing them to clump together and drop out of the air. https://farrell-shaffer-3.blogbright.net/small-room-hepa-air-purifiers-compact-power-for-cleaner-air