Originally Posted by KevAZ
Straight from IATA:
...
7) Knowing about the ban, passengers may be tempted to place such lighters into their checked baggage where they will pose a major safety hazard. There are a number of recorded incidents of lighters in passenger baggage and cargo
shipments initiating fires which fortunately to this point have not caused
known injuries or fatalities.
Well, I wouldn't call it a "major" safety hazard, but it is worth noting that the small increase in risk associated with the inevitable increase in checked lighters will exceed the current zero risk associated with allowing lighters in the passenger cabin.