"It is normal that if you feel the ozone smell. Since ozonating a glass of water is a process of 5 minute, the ozone level escaped into the air is very low, far lower than the safty level. It will not affect your health. Only the high level of ozone, which is normally the production of a professional ozone air purifier or generator ( at least 10 time of ozone outputs of the OZX-300AT ) may be a problem if you stay in its working area for a while.
So, you do not need to worry about it. If you do not like the smell of ozone, you may leave when the OZX-300AT is ozonating and get back after it is stopped."
Also my Enaly off Ebay has a one year warranty. I can purchase a three year one for 12% of the cost (about $12)