A great way to do vag insufflations is in a bath of hot water. Insert the catheter as far as possible into the vagina without causing any distress, lay back and relax. the ozone will definitely not stay in the vagina, but the bubbles escaping will also ozonate your bath water and provide benefit for the rest of your body.Keep your head away from the escaping ozone to avoid breathing too much ozone. If you find you have taken in too much ozone through the lungs, take 2 grams of vit c to counteract the pain in the chest and the inability to breathe easily.
Hope this helps