1 Do NOT remove an object such as a knife, stick, or arrow that is stuck in the body. Doing so may cause more damage and bleeding. Place pads and bandages around the object and tape the object in place.  Put pressure directly on an outer wound with a sterile bandage, clean cloth, or even a piece of clothing.
Carbon Monoxide is always lighter than air down to 32 degrees. Plus it come out of the appliance hot which would put it at the ceiling first. Warmest air in the room is at the ceiling therefore it would linger there the longest.
At a COHb level of about 10%, carbon monoxide is likely to cause headache, and at somewhat higher levels there will be also dizziness, nausea and vomiting. At a COHb level of about 40%, carbon monoxide starts to cause coma and collapse, and at 50â60% the poisonings are often lethal (1) .