I have PTSD from a hotel fire and then a fire at home (as well as a couple of other incidents). Fire is an absolute bastard to deal with. It is so very elemental, it is all around us and the smell of smoke is so very hard to avoid where I am now (Tasmania) during winter. I'll get all OCD at night, I cannot sleep, I dream of fire, I go around and check only god knows how many times a night.
Did you have smoke alarms fitted? One major problem I had was that we didn't in the Hotel and I was woken by accident, and that sincerely sucks. I don't imagine it would be particularly pleasant dealing with a house fire at Christmas, but I'm hoping you have made some progress?
Welcome to the forum:)
PS One thing I've found is that a lot of people don't understand fire and exactly how scary it can be, especially when dreaming about it, it can be evil in its purest form, hell isn't depicted the way it is for no reason.