Don't worry about vinegar hurting your stuff. I use it diluted to clean old leather holsters or knife sheaths with mold, stinky leather seats and just finished cleaning up a leather jacket I loaned to a smoker. Geez, I forgot to get it back and 4 years later it was a real mess. I ended up killing the smell with a 50/50 mix of distilled white vinegar. Just spray on and wipe off. For tough jobs I use a soft brush to work it in before wiping it off.
And NO,,, I don't smell like a pickle! Follow up your treatment with some type of leather conditioner. Vinegar is truly amazing stuff.
I use it on the windows of my house because it's cheap and I have a lot of glass.