The quilt smells musty after being left for a long time. It's been raining continuously recently, and I can't get the sun. What should I do?

Correct your mistake, you are not caught in this kind of thing. The innermost velvet includes artificial cotton, silk cotton, cotton wool and so on. This is called quilt cover, not quilt cover. The upper layer outside the quilt cover is called quilt cover, the lower layer outside the quilt cover is called quilt cover, and the outermost layer is called quilt cover. It seems that you are still young and have not mastered many life terms. There are two possibilities for mildew, one is to get wet, and the other is not to wash it clean. There is nothing to do but wait for the sun to shine.