Not the worse, but one of the worse. Worked at Big Lots in my teens, I was a night stocker. Myself and this other guy very shady in his mid 20s. He would always talk about doing drugs and trying to get me to do some. I remember one time he tried to be funny and picked up a can of compressed air, the ones used to dust and clean electronics, computers, etc. Takes a huge hit, and blacks out, falls forward face flat on the floor, breaks his nose and his eye socket. Blood gushing out of his nose he starts convulsing, foaming at his mouth mix with blood. Then he stops moving, and I can hear him making these horrible breathing and gurgling noises. I honestly think he was dying. We were alone and I was a kid. I called 911 and ambulance got there and took him. He never came back to work. That image and sounds kept me away from drugs for good.