Open the travel case and leave it open. Remove the case's plastic inserts and foam insulation from the travel case and lay them in a single layer on a flat surface in a cool, dry, well-ventilated room. To improve ventilation, run fans in the direction of the travel case and its components.
Pour out any liquid inside the case and sop up additional liquid with a soft sponge. If the case or its components are dirty, wash them off with soapy water.
Soak case components in a 25 percent solution of white vinegar if they have a musty mildew smell. Allow them to air dry. If the case itself has a musty odor, wipe it down with a vinegar solution and leave it open to air dry.