Here is a good criticism of ozone therapy as a treatment for Aids.
http://www.quackwatch.org/01QuackeryRelatedTopics/Cancer/oxygen.html
People should be familiar with both sides of the issue. If you want to defend any position of an issue, it is important that you be familiar with all positions.
The main thing I want to defend is individual health freedom, regardless of what works and what doesn't (but it is important that individuals be informed). Individuals are generally best fit to choose what's best for themselves.
The Catch 22 is the problem of 'information' on the internet with arguments; most people will get their sources from the first google results which are usually big business oriented for example the site you provided creates 'disinformation' and is a source to discredit alternative therapies like Ozone. A better one to argue against and show this is one that isn't tied into the pharmaceutical industry that sustains its profits with no special interests tied into this.
Being that AIDS and Cancer kills people and the Big Pharmaceutical companies are in charge of finding the cure and the CEOs of these companies are probably all a part of the Bilderberg Group and have the FDA in their pocket. I would never ever trust anything they recommended. I think it would be better to do nothing than to take anything approved by the FDA. I might have some trust had they not blatantly put aspartame on the market in spite of all the research that said it was not safe.
Better stop eating fruits and vegetables, and focus on fatty red meat and sugar, then.