I am sorry to hear this news.
I have one, got it a long time ago, but recently I spilled water in my bag, cleaned it up, thought I had gotten it all, turns out water had seeped into my cles, there was a paper card in there along with the usual plastic cards I carry and a few days later when I opened my cles, there was an awful mildewy smell!
I cleaned the cards, ditched the paper card, poured baking soda in the cles, but no luck. Let it sit for a long time like that hoping the baking soda would absorb the odor. Nope. Then I resorted to spritzing the inside with perfume.
It is on my dresser still, I am still sniffing and spritzing occasionally, hoping the problem will resolves itself eventually. Meanwhile, I am using my cles in de.
I don't think I will purchase another cles in da. I am determined to get that odor out of it, but am bothered that if I change my mind, it won't even be available.