If you find that your bedding is moldy, you can dry it first, and then change it if it doesn't work. Recently, it was reported that an aunt in a university dormitory helped her classmate bask in the quilt because of the epidemic. This is because many people are not in the dormitory for a long time, so their bedding begins to get moldy. Then the aunt's warm heart won applause from many people, and everyone thought she was a particularly kind person. If your bedding is only a little moldy, you can dry it, but if your bedding is moldy, it is more cost-effective to buy another set.
Bedding is actually not expensive. If it's moldy, you can buy another set. Because many people now have better living conditions, they won't talk about the poor days in the past, and bedding is cheap. If you find that the mold is serious, you might as well buy a set. Because something more or less moldy is actually a bit unsanitary. Although exposure can kill bacteria, it is impossible for anyone. For safety reasons, you can buy another set.
To sum up, when you find that your bedding is moldy after college starts, you can choose to buy a set or dry it. It is generally recommended to throw it away and buy a set without changing it. If you change two sets, you can wash one set and expose it to the sun below. People with different economic conditions can choose different corresponding methods. If it were me, if the mildew was not serious, I would choose to wash it and expose it to the sun.