The ozonator I have is from Nature-Kleen, I've done both vaginal and anal ozone insufflation. After the first vaginal insufflation, my chronic yeast infection was gone. Did it a couple of more times to be sure. Anal insufflation was a major part of curing my leaky gut. Gave myself these treatments in the bathe. As far as embolus goes, I don't see how this is possible unless the excess ozone is totally trapped.