If you're dealing with a mildew smell, there are a few things you can do to try to get rid of it. First, identify the source of the smell. If it's coming from your clothing, try washing them with vinegar or bleach. If the smell is coming from your carpet or upholstery, you can try cleaning it with a mixture of water and vinegar. You can also try using a commercial mildew remover.
If the smell persists, it's possible that it's coming from something else in your home, like your walls or ceilings. In this case, you'll need to call in a professional to help locate and remove the source of the smell.