couldn't tell you, but I used to get burned a lot in an industrial kitchen, and even the severe second degree burns were nothing more than minor annoyances in the scheme of things. (co-worker poured 600 degree lobster grease/water all over my left hand, and yes it was a minor annoyance all things considered)

but it was a few years ago that I caught on fire from a campfire, and even though it was not that serious (severe 2nd degree from wrist to elbow) I was lucky that there were people around who threw me on the ground to put me out. I was thinking "ok, keep trying to beat this out and calmly walk over to the spigot and put the fire out" needless to say, events took their own course. I stopped beating to check if I had got it out, and the flame took off running up my sleeve (flannel shirt) and I could hear my hair begin to crackle..... like I said if it weren't for others being there I could have been in real trouble. I was tackled. (remember I was still trying to remain calm and walk not run to the faucet around 10 - 20 yards away.) just as I was being tackled, I felt the sharp searing pain along my entire arm from hand to shoulder and it was worst than any burn I had ever had. from old fashioned m-80 in the '70s blowing up in my hand, to 600 degree grease pored on my hand, this was far worse.

so perhaps your subconscious knows what your conscious mind simply cannot. "what it will feel like" because until you experience being on fire, you can not know how you will react, or what it really feels like. I was lucky, I had help and mine ended up being minor after a fashion of speaking but I still have a scar that ruins my tan from wrist to elbow.