if you don't want to chance putting the fabric through a machine wash, how about soaking in a sink or the bathtub with Odo-Ban or Oxi-Clean? That's what's always worked for me. I recently purchase quite a bit of fabric from an estate sale. Everything was in boxes in a musty, damp basement. Oxi-Clean has become my best friend! That and my clothes line to dry in the warm breeze!!