CarboFlex Odor Control Dressing, Sterile. CarboFLEX dressing is a sterile, non-adhesive dressing indicated as a primary dressing for shallow wounds or as a secondary dressing over a wound filler for deeper wounds. It is a five layer dressing specifically designed to address the management problems associated with malodorous wounds, combining an absorbent wound contact layer, an activated charcoal central pad and a smooth water-resistant top layer.