I once had a dream that I was boarding an elevator on the 20th floor of a 20 story building. It started down and started shaking a lot. It then it stopped on the 19th floor to let more people on. I had a very strong urge to get off so I did. The elevator doors closed and a few seconds later I hear a loud explosion and the sound of screaming and the elevator falling, eventually slamming onto the bottom floor resulting in a second explosion, killing everyone on board. I saw lots of smoke and flames were coming up the elevator shaft. The last thing I remember were the fire alarms going off, people evacuating the building and the sound of fire trucks approaching. After that I had a birds eye glimpse of what happened in the elevator, apparently everyone burned while the elevator fell and killed them all on impact. Creepy and weird dream.