Ozone reacts with most airborne particles and the particles are attracted to floor and walls. The particles are not in the air for you to breathe but they do build up on your floors and walls. People that claim that Ozone generators will reduce air borne pollutants are correct. The problem of removing the residue that builds up on the floors and walls is ignored. The problem is the Ozone cleaners are dangerous.
Ozone is dangerous to humans and plants even at very low concentrations.
The study in Encyclopedia Britannica found that levels as low as 0.12 parts per million have a negative effect on human respiratory systems. Recent media articles have indicated that at least some Ozone generators do generate dangerous ozone levels. You will read testimonials from Ozone cleaner users who say that the units have changed their lives, asthma suffers can breathe again etc. These are true. Initially the Ozone cleaners would remove all of the air born pollutants making it easier for asthma suffers to breathe.