The "lighting three cigarettes from one match was unlucky" started in WWI and continued in WWII. It wasn't so much unlucky as downright dangerous. Having the matches burn that long pinpointed your location to snipers and mortar. It's not so much unlucky, as it is actually life threatening! It's like the walking under a ladder, it's not unlucky, it's that there is usually someone at the top of the ladder and they might drop something on you. Another is opening an umbrella indoors. Houses used to be MUCH smaller and there was really no room to open an umbrella without poking someone in the eye. A lot of superstitions have common sense origins.