Yes.
In my experience, it's more likely to happen when the party has been ambushed and captured, and our equipment has been stolen, and we escape and go after the guys who took our stuff, and my character casts a fireball, and there's an innocuous-looking shed sitting there, and... :\
But whenever the guys remind me of this incident, I just have to mention the time another player's cohort fireballed the tent containing
the hostage we were trying to rescue. "We tried to rescue the Prince, Your Majesty, but unfortunately, somehow, during the battle..."