There’s no doubt that ozone is dangerous to humans and animals, but what does it actually do? Does it kill people? Does it kill animals? Many people have concerns about ozone generators. Ozone is a charged gas of oxygen molecules that have gained an additional oxygen molecule.
Whenever this gas comes into contact with organic cells, it tries to give those cells the extra oxygen atom, resulting in ozonizing it. This changes the cell or molecule, causing it to die or causing it to change into something different. Fortunately, it’s not strong enough to kill a human being. It will certainly cause discomfort, though.
Ozone is a great tool, but you should read the precautions at http://www.damagecontrol-911.com/killing-bugs-and-mold-with-ozone-generators/
While it might not kill a human, it can do a lot more harm to a pet than us. This is especially true for birds. Birds are very sensitive to ozone and it can kill them in a matter of minutes if you leave them in a room with an ozone generator running. However, never leave any pets in at all because it can kill them.
Running it in an unoccupied space is your best bet, so be sure to only do it whenever neither you nor anyone else is in the room you’re deodorizing.