moldy smelling mount

[SaraJean]

So I have 7 mounted orchids that all seem to be doing spectacular, except one... I mounted a new bare root bulbophyllum last week that I purchased from Andy's and now it smells moldy. I used the same materials on two of the other mounts that I did that day (cork slab, sphag, watered with inocucor's garden solution, kelp, weak MSU fert) and those are looking, and smelling, good. So what should I do about the stinky one? Just take it off the mount, pull all of the moss off and replace? Or does anyone have any other ideas that would not require me to take the orchid off of the mount?

Not sure why this one is stinky and my others are not