I don't know much about the guitars but I think they like humidity. On the other hand, higher humidity contributes to mold growth, yes?

So, I hope the horn is cleaned and, even more, there is no mold in the case. At the least, swab the mouthpiece and leadpipe.

And there's nothing worse than a moldy horn case. Mildew and petroleum-based valve oil is a formidable smell. I even started a discussion on Trumpet Herald asking what people did to clean a funky plush case. Lots of ideas, but the predominant decision was, throw it out. Better to prevent the problem.


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