Yes you are correct that Radicals and Oxidizers damage DNA, and this is a very good point you brought up. It helps to understand the reaction that takes place, and the level of penetration/permeation.

Hydroxyl Radicals form for a very short period, and the reactions that take place as a result are what cause the net effect of odor removal.

Many things damage DNA. The electricity from the computer you are sitting on right now is damaging your DNA. This question poses a lot of different concerns with many phenomena but it all boils down to positives and negatives.

Based on my research and it has been a long road- I would use them. The Radical is in the air for too short a period to cause significant damage to myself in the current setup I am running with reguards to proximity penetration and circulation.

I have had this debate time and time again with friends of mine in real life. I guess all I can say is do extensive research about the process. Ozone is very dangerous to people because the biproducts are deadly gases, but then some people would say they are safe (lack of research) and even spend money on it without researching or finding alternatives.

Ozone is used in many chemical reactions but does not necessarily stay around long enough or reach far enough to do its damage. I would possibly use Ozone depending on the particular method or application even knowing it creates deadly gases because sometimes it can produce more harm than good in a given scenario.

Its important to note that many natural occurring phenomena are harmful to humans, and it is for this reason why life evolves on planet earth. Without things to damage our DNA, how would our code change? Also I find myself doing a lot of things that are bad for me so I am probably not a good example...