Peroxide, chlorine dixoide, ozone, all increase oxygen in the blood...i am plumber and use all these in water treatment.... Oxygen should be at 97% low oxygen can contribute to cancer....i am using a puffer now and my oxygen in my blood is increasing. Wifi signal will reduce the amount of oxygen in your blood. Ever thing on your house should be hard wire and throw the wifi router in the garbage. i have long covid and have decided to stay away from the hospitals and do my own health care. low oxygen levels can lead to cancer. an i do have cancer why would this not be widely known?