When you encounter dense smoke, use a clear plastic bag to cover your head. The specific method is: let the plastic bag jitter around to make it fill with fresh air, and then quickly to cover in the head, and grasp the mouth tightly, to prevent air leakage from the bag, or the smoke running into the bag.
Almost all fires produce a large amount of harmful smoke so you can make smoke tools using wet towels or mouth muffle to cover your mouth and nose. If you can't find a towel, you can use a mask, a sheet and other items as a temporary "air breathing apparatus". When the situation is urgent, clothes can also be used. However, it should be noted that although the wet towel can eliminate the smoke, it can not prevent carbon monoxide, so you should adopt a low posture to move forward, and don’t take deep breath and escape from the fire in time.
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