The best advice I can offer in this thread is if there is ever any concern that a fire may be present,
RUN LIKE HELL out of your motorhome. I've seen a number of RV fires and can tell you first hand that a coach will erupt into a major conflagration in a matter of seconds. Trying to fight the fire with a fire extinguisher is probably the most foolish thing you could ever consider doing. You just don't have time. Get out. Get away. And be glad that your insurance company just bought a motorhome.
Additionally, be absolutely familiar and comfortable with the emergency exits of your coach. Most have an escape window, but how many of you have ever attempted egress out the window? How do you plan on getting out? Have you ever tried? Have you ever even opened the emergency exit? You would be surprised how many people have never actually pulled on those red handles, or never actually tried getting out through the opening. Do each of your family members know how to use the emergency exits? How about any guests you may have on board? Everyone should practice at least once a year with the emergency exits. At the very least, it's a good idea to exercise the components so you know that everything works if/when the time comes to use them.
Quick story ... I had a unit for sale on my lot a number of years ago. Apparently there had been a minor water leak at one of windows in the rear bedroom at some point in the past. This window also happened to be an emergency exit. Red handles, appropriate placards, the full enchilada. Well, previous owner decided to "fix" the apparent water leak by sealing it shut with black RTV or similar silicone caulk. No clue how long the unit had been driving around like that, but his seal job effectively rendered the emergency exit useless.
Make sure you know where your exits are. Make sure all your family members know where the exits are and how to use them. Operate the exits regularly. Practice getting out through each of the available exits.
I know, it sounds like a lot of work, but it could save your life one day.
Photo courtesy Mac McCoy.