I like the way you use the word bleach as if anything that bleaches is a horror never to be allowed into the body in any amount
Chlorine dioxide is indeed used to bleach wood pulp as we know.
Also it is used to bleach flour fats oils textiles and beeswax.
Other bleaches also used in this way are peroxides, ozone and yes oxygen itself.
In fact if you leave flour exposed to the air long enough it will bleach itself
Now I for one am going to allow oxygen into my body and even a nice drink of oxygenated water I think would be just fine, in fact rather good for me.
Ozonated water is used as part of the Beck protocol with good effect I believe.