This wouldn't be a "small of back" holster that was riding too low, was it?
Look for any kind of deodorizing cleaner that contains "Benzalkonium chloride" or "alkyldimethylbenzylammonium chloride" (same thing) and wash it with that. Don't get the concentrate in your eyes; other than that it's pretty safe. It's used in humifiers to kill algae and it hospital disinfectants and in dairy sanitizers.