To avoid getting metal flakes from aluminum foil into your eyes or mouth, handle the foil carefully with clean, dry hands. Avoid using foil that is crumpled or damaged, as it can release more flakes. When cutting foil, use a sharp knife to minimize the creation of small particles. Keep foil away from your face and eyes while handling, and consider wearing safety glasses if you are concerned about eye safety. Wash your hands thoroughly after handling aluminum foil to remove any residual flakes before touching your face or eating.