Ok, spread doom and gloom, scare people with how terrible things can be. Occasionally they are. But the facts are, that most people get out of residential fires just fine. Most people use the doors to exit the home. You sleep for 8 hours a day and are up and awake for 16 hours, twice as many. Why do you say that the fire will occur at 1-2 am? Scare factor?
As you said earlier "you have seconds to get out". Watch this NFPA video which states it takes about 2 minutes for the space to become untennable AFTER the smoke detector goes off. http://www.youtube.com/watch?v=9JU59Nsv2vg Watch the sofa burn and put off the horrible gasses, yet you can still see the floor right next to the fire.
I see the deadly cyanide gas scare word. Here is the CDC's description and warnings on cyanide. http://emergency.cdc.gov/agent/cyanide/basics/facts.asp
Since many won't bother going to the site and reading it let me give you a couple of quotes:
"?Cyanide is released from natural substances in some foods and in certain plants such as cassava. Cyanide is contained in cigarette smoke and the combustion products of synthetic materials such as plastics. Combustion products are substances given off when things burn.
?In manufacturing, cyanide is used to make paper, textiles, and plastics. It is present in the chemicals used to develop photographs. Cyanide salts are used in metallurgy for electroplating, metal cleaning, and removing gold from its ore. Cyanide gas is used to exterminate pests and vermin in ships and buildings.
?If accidentally ingested (swallowed), chemicals found in acetonitrile-based products that are used to remove artificial nails can produce cyanide."
and
"?You could be exposed to cyanide by breathing air, drinking water, eating food, or touching soil that contains cyanide.
?Cyanide enters water, soil, or air as a result of both natural processes and industrial activities. In air, cyanide is present mainly as gaseous hydrogen cyanide.
?Smoking cigarettes is probably one of the major sources of cyanide exposure for people who do not work in cyanide-related industries."
and finally
"?Cyanide gas is less dense than air, so it will rise."
Since we've all been taught that the coolest most breathable air is at floor level, and that we should crawl out of a burning room, our ingestion of "deadly" cyanide will be minimal.
I'm sitting in my motorhome. I'm looking for "A lot of plastic, fiberglass, and thin wood." I see paper based wallpaper. I see cherry wood cabinets with metal handles, the thinnest wood I see is the 1/2" plywood on the bottom of the cabinets. I see cloth window valance boxes with some foam inside, I see corian countertops. I see leather covered furniture with foam and other padding underneath. I also remember that firefighters use leather gloves to protect themselves from fire. I'll bet if I looked at the label the foam padding would have been treated with a fire retardant. I see tile and carpet on the floor, but as you know, unless an accelerant has been used the carpet rarely burns in any residence fire. I have some plastic on the computer, plastic on the coffeemaker, light switch surrounds are plastic, and the handles/bars on the day-n-night shades are plastic. I see no fiberglass inside my motorhome. And since we are obviously talking about escaping from a content fire (things inside a building), not one which has progressed into a structure fire (the building/coach itself) the motorhome siding isn't a factor. Your RV may be different, but that's what's in mine.
Everyone needs to try and prevent a fire. Everyone needs to prepare in case of fire. Everyone also needs to practice for fire. But nobody needs to live their life in mortal fear of fire. In case of fire, keep your wits about you and use the best escape method for that particular circumstance. Sometimes it may be going out a window, sometimes it may be crawling to the front door. You may have a fire that is extinguishable or at least can be knocked down while you are escaping, that's why you might keep an extinguisher in your bedroom. Closed doors between you and the fire buy an amazing amount of time in a fire situation. There are a lot of things which can be done to make the fire more survivable. If you buy into the notion that you only have seconds, you may as well give up and lay down to die.
Tin man has his point of view and I have mine. It doesn't hurt a thing to consider both points and decide what is right for you.
Ken