You should throw it out. Mold can be deadly.
How Can I Get Mold Out Of A Blanket?
Use a color safe bleach, which will kill it and should remove it. If you ever have something that you have washed and still smells, try and go to a sporting goods store, and get a hunting scent killer,a carbon based
cleaner /scent killer for washing hunting clothes usually will do the trick.
cleaner /scent killer for washing hunting clothes usually will do the trick.