Musty bark

[Jugyjoy]

I’ve recently bought some Orchiata bark but it arrived wet and smelling musty. Unsure that it would be all right to use it straight out of bag, I baked it in the oven. This worked somewhat as the bark is ok when dry, but when it gets wet it still gives off that musty smell, albeit somewhat attenuated. Unfortunately, i have already used it to repot one of my phals and am now stuck not knowing if the pot needs some kind of further intervention.
Would be grateful if anyone could advise.
Many thanks.