just a little bit i was thinking about, if ur tokeing that hard lots of oxygen is running past that flame so its probly getting quite hot it could be possible that a really hot flame is breaking down extra o2 or h2o which might form o3 or ions but i cant see it happening because i get things hot in chemistry alot and nothing like that happens plus it takes sum a pretty special enviroment for this chemical to form (o3). could be another chemical reacting in sum way but i dont really no, i wish i had a glass bubbler to try it but i no that by bong doesnt do it. probly ions maby from a charge building somewhere and imparting it on passing atoms like it a ion maker found in some air purifyers.