More than often some of your belongings, which you do not use in Asia, are stored in a suitcase and backpack. Or stacked with a stack on a shelf in the closet. If your air conditioner does not work 24 hours a day (or you do not have it at all) — then after a while you will find mold on the clothes.
Believe me, it is very unpleasant. When you take a hat, you try to open it, and you can’t. Because the fungus glued it from the inside. In the laundry, I ended up washing it, but it’s a different story.
The best way out is to put a moisture absorber unit in a suitcase (backpack).
Either make another great thermobox for things you don’t wear. There to remove the passport and important documents. And of course all the electronics.