Well, I tried everything except the hydrogen peroxide, water, and dish soap formula.

Stinky smoke odor removal

None of it worked really well although AtmosKlear did a reasonable job. So, somewhere in late May or early June I hung the holster on a hangar under the fiberglass roof of my patio - not in direct sunlight but not far off from it, either. Almost 5 months it hung there, in the heat of a Texas summer, until I brought it in over the past weekend.

Mostly, it smells like leather again - there is a lingering aroma of smoke. Very faint - I'll try that H2O2, water, and dish soap trick sometime to really finish it but at least now, when I use it, I can't smell it and my clothes don't stink afterwards.

Thanks, y'all!!!

Yeah, I have been working on a leather holster for about 6 months and have "most" of the smell out of it!!!

No one thing seems to work but hanging outside in the fresh air appears to be a strong candidate!!