Several manufacturers are currently selling ozone generators as air cleaners. The companies manufacturing these devices state they are safe and effective at controlling indoor air pollution; however, for almost a century health professionals and health organizations such as the American Lung Association have challenged these claims.
Sellers of ozone-producing devices often use fanciful terms to describe ozone. It is referred to in such terms as “activated oxygen” or “pure air”, which suggest that ozone is merely a healthy kind of oxygen. However, ozone is a toxic gas which has vastly different chemical and toxicological properties compared to oxygen.
Ozone is a molecule composed of three atoms of oxygen, as opposed to the oxygen we normally breath, which has two. The O2 molecule is stable and nonreactive, whereas the O3 molecule is unstable, tending to dissociate and produce an O2 molecule and one single ionized oxygen atom. This single atom acts as a “free radicle”, that is, it reacts with other nearby substances and changes their chemical composition. It is this ability to combine with other substances that forms the basis of...