This comes under the heading "Tree Fire Proof Spray".
It only takes a moment for a dried out, unprotected tree to erupt into flames, and the blaze can quickly spread to the ceiling, floor and walls of any dwelling or office in just a few seconds. This results in a huge amount of structural damage, monetary loss and worst of all, the loss of lives. . it is tragic that every year many homes and buildings are severely damaged or lost to tree fires when simply using a fire resistant spray can help you to avoid all of these types of potential disasters.
Anyone who intends to bring a tree into their home or work place should take one very simple and yet extraordinarily beneficial safety precaution - using a tree fire retardant spray. A flame resistant spray is a product that is applied liberally over any interior tree. The spray will help the tree to become much more resistant to fire, and help to stop a blaze before it becomes a serious problem. Enjoy a beautiful indoor tree during the holidays or all year long, but make sure it is safe first by covering it with a blast of tree fire retardant.
What does the Forum think? To me there are an awful lot of words in here which do not point to actual "Proofing".