text:  You good. But you're not good. This method will not work. It's impossible to detect fentanyl by how a drug smells or tastes, and a mistake could be fatal. JR didn't overdose that day. He was lucky. He knows about fentanyl test kits, and he uses them sometimes, but not this time, which shows that getting people to test their drugs every time is going to take a lot more work.