oxygen; adult; ambient air; bronchiectasis; bronchoscopy; burn; burn unit; case report; chemical burn; chemical pneumonitis; clinical article; complication; conference abstract; coronavirus disease 2019; emergency ward; excision; explosion; fume; high flow nasal cannula therapy; hospital discharge; hospital patient; human; hygiene; inhalation; lung edema; lung injury; male; non communicable disease; nonhuman; North America; pandemic; pneumonia; respiratory care; Severe acute respiratory syndrome coronavirus 2; skin transplantation; soot; surgery; thorax; total body surface area; upper limb; X ray film; x-ray computed tomography