Wrong place, wrong time

The smell was lingering through the air. It was like it went down my throat and expanded in my lungs. The struggle to breathe was getting harder by the second. It was like I was trapped and the walls were growing taller and taller. I tried to escape but I just couldn’t. The walls were barricaded and too tall for me to climb. I felt lost in all hope and couldn’t figure out a way out. I tried ramming one of the walls down but I sunk into the thick gooey green pus filled substance on the walls. All of a sudden I fell into shallow wetness and a sound like a freight train occurred, then the custodian knocked on the stall door and told me to go back to class.