moldy wooden matches?? [View all]

This is a puzzle. About four months ago I bought kitchen matches -- the kind of packaging that's a bunch of little boxes packed in cello wrapper. Last week I opened up the cello wrapper, opened one of the little boxes and found moldy wooden matches. Black powdery stems. Opened another box; same thing.

Now, how could matches get moldy inside boxes inside a cello wrapper? They don't light, either, by the way. The cello pack was stored inside a drawer of a storage cart with other household stuff -- light bulbs, filters, etc. All in a closet.