Once that's done, all you'll need to get that mildew smell out of clothes are two ingredients you most likely have in your pantry: distilled white vinegar and baking soda.
Pretending a problem doesn't exist can feel easier than tackling it. But when the issue is something gross - like a weird smell coming from your kitchen sink - ignoring it is almost guaranteed to make it worse.
Chlorine-based bleach, while effective for stain removal, can be harmful to materials and must be handled carefully; nonchlorinated alternatives like hydrogen peroxide provide effective cleaning without damaging colors.