The gas that escapes from ozonating olive oil is terpene gas and it is far less volatile and corrosive as raw ozone. Raw ozone will only escape from ozonated olive oil when all of the essential fatty acids in the olive oil have been converted to ozonides. leaving nothing in the oil for the ozone to interact with. The terpene gas has been shown by many practitioners to be beneficial for lungs and mucosa membranes and has been used to treat bronchitis, asthma and the like. The terpene gas in large amounts will still degrade non ozone-resistant materials.
The process of ozonating oils causes heat because it is an oxidative process, so even when oils are fully ozonated, the heat produced raises the viscosity of the liquid, allowing it to be poured. The fully ozonated oil will congeal when refrigerated.