Many moons ago I loaded up five pax in a King Aire 200 and commenced starting engines. The thing had auto ignition when you hit the start button, as I recall. Was cranking the left but could not get a light off. I suddenly noticed the ignitor light wasn't on - without thinking I flipped it on manually. You guessed it, big torch + "WHUMP!" + EGT through the roof.
I aborted the start and kept motoring the engine. I turned around to reassure the passengers - and barely saw the last one rounding the wingtip! They had popped the door and absquatulated. Took some coaxing to get them back in!