It’s probably happened to you or someone you know where the jack o’ lantern lid is placed back on the currently lit pumpkin. The smell of burning can startle or give you that expression “something awful is cooking/burning… OH!” Remember to stay safe during the festivity and it’s probably safer to use one of those mini light bulbs to keep your jack o’lantern shining bright.
Take it from me, pumpkin carving is fun on various levels and quite relaxing. Have you carved a pumpkin out yet or plan to for Halloween or just for fun? What kind of design were you thinking of doing? A scary scene or face?