italian sxs- we're talking about moldy gun cases, not smuggling cocaine past airport drug sniffing dogs, OK? And LeFusil, I kind of like that moldy smell, too. I remodeled my kitchen and put in a pie safe and a jelly cupboard, both from the late 1800s. And the one thing I like about them is going through the kitchen and smelling that old musty smell they put off. But anyway, I would try some Air Wick or some Glade air freshener. In some kind of spice or strong fruit odors. I use them in my old tennis shoes and they always worked pretty well. Is there any way you can change the padding in the case? That might help also. I would think that the smell would eventually wear off of the gun. Hope this helps. (and italian sxs, I hope you know I was just pulling your leg.):)