Answer: you have to seal the wound with an occlusive dressing
Explanation:
Remember that your hands have to be clean and the occlusive dressing too. An occlusive dressing is easy to get in any pharmacy. An occlusive dressing is an air- and water-tight trauma medical dressing used in first aid. These dressings are generally made with a waxy coating so as to provide a total seal, and as a result do not have the absorbent properties of gauze pads.