Mold growth on clothing isn't uncommon when dealing with a pervasive mold issue in a closet or bedroom. In terms of knowing what steps to take, as well as what clothing is salvageable, it depends on the level of growth. The following is a list of useful tools that every homeowner can implement when discovering mold growth on their clothing:
Moldy clothing can generally be salvageable as long as there isn't physical damage to the item of clothing. Alternatively, it may be worth having an inspector conduct a surface test on the item(s) in question to also determine the type of mold that is on the clothing.
MOLD HEALTH EFFECTS BLOG AND RESEARCH