 J.R. said he wanted to show me a method he has for smoking crack without overdosing. I followed him around the corner to an empty stairwell. He put a crumb of crack the size of a lentil in his glass pipe. He flicked his lighter and held the flame underneath. When you do this, when you see that smell, you see the smell, just smell. See, that's a guy like sweet smell, got fentanyl.