I'm not sure about the worst one but two days ago I dreamt that I was in a building that at first was my mom's house and there was something odd going on in the cellar. We heard weird sounds coming from the room with a gas heater, like hot steam going through pipes but I was told it's how it's supposed to be. My brother went to check it out and said that some stuff is evidently overheated there. Suddenly it wasn't our house anymore but some public building and there were more people around and we were maybe on the third floor in a formal looking corridor/hall, so further from the cellar. Now it was clear there was a fire somewhere below but nobody seemed to be doing anything about it. Few people were saying we should leave but nobody did. The odd thing was that there was no smoke, yet I felt heat and saw sparks between gaps of a wooden flooring when I ventured out to further parts of that hall where others didn't dare to go. I felt the urge to leave, get away from there and it was easy because there was some exit right on the floor we were on but since it was so easy, I thought that I could leave anytime so I didn't.
It left a strange feeling in me. That progression of events when you know something is in motion and it's wrong, yet you're not stopping it. The stage when something is overheating, you feel the heat, you hear strange sounds, maybe you see how metals turn red, then you see sparks and then you know there's fire somewhere over there. Especially that feeling of taking a look from another part of the room and it gets confirmed what you think is going on because you see bright orange sparks through gaps and realizing that it's just a matter of time before the floor falls in under your feet.
