Obviously you do not know what Ozium is, it is an
ozone spray.
What you recommend is called an Oz
onizer or Ozonator (looked it up). You are suggesting OP buy a machine that costs $80 to $500+ to fix a problem on a used holster worth what, $20?, instead of simply buying a $6 can of ozone spray that would do the same thing? That would be pretty stupid, wouldn't it!


OP would be better off to just replace the holster with a new one!
Ozone (O3) is ozone whether from an ozone generator or compressed gas in a spray can!