Has anyone tried ozone therapy for lung cancer treatment?

Does anybody have any information on 03 treatments or ozone I have a friend that has a machine and has used it on his friend and removed three tumors within 3 weeks and have yet to return and that was years ago was wondering if 03 might work with lung cancer as it was reported that it helped in the past with patients with cancer as well as with people with HIV or aids so if this is the case I think I would like to go with an 03 treatment but there's no proven research other than my friend but I know he's reputable so I'm just seeing if there's any other information out there to on treatment of '03 and how to administer my friend used it on his girlfriend rectally but I've heard this other ways just by drinking or injecting correctly into the bloodstream Any information would be great as I need more before I can do anything with this thank you