I passed by a school i had been to before (possibly in previous dreams cause none of my irl schools looked like it) and saw some guys rushing out with shopping carts full of things that were smoking. Then i noticed the building was also smoking. They were the culprits, they were planting potential bombs in the school. I got home at some apartments, and soon found more of that smoke. I was caught in the middle of some of it and coughed till my nose started profusely bleeding. I was crying at this point too.
This dream may suggest that you are feeling anxious or threatened by a situation in your waking life. The school represents a place of learning and growth, and the smoking shopping carts and building could symbolize the presence of danger or destructive influences around it. The feeling of being in the middle of the smoke and coughing, with bleeding from your nose, might represent a sense of being overwhelmed or trapped by this situation. You may feel like you don't know how to escape from it and it is affecting you emotionally. It could be helpful to reflect on any stressors or challenges in your life and think about ways to address them.