Our lovely little device essentially uses a two-step process: (1) Release positive and negative ions into the air & (2) Spread them out with a miniature fan. Once airborne, these ions seek out airborne contaminants and fully break them down — much like heat-seeking missiles track down their targets. For all the Quair Plasma Mini does do, though, perhaps most important is what it doesn’t do: Produce harmful levels of ozone like most other portable ion-based purifiers. With Quair Plasma Mini, we’ve significantly cut down that byproduct, falling well below FDA and EPA upper limits for ozone emission to keep your lungs safe and healthy.