Computer literally just started smoking (Patreon)

You guys I was working all night on a stupid video I made for Patreon that wouldn’t export no matter what I did and THE WHOLE COMPUTER STARTED SMOKING IM NOT EXAGGERATING. I straight up panicked and just unplugged every electronic from the wall and lost all my files holy shit that was scary! Does anyone have any guesses as to what caused this??? - Aly