Carfentanyl is so dangerous that if it touches your skin you will absorb it, and depending on the dose you will instantly overdose. First responders are in extreme danger when they go to overdose calls. They have to go in teams of two, wear gloves and have many doses of naloxone.
Fun fact, one dose naloxone is only effective against heroin. It takes several doses for the other two drugs and then its possible it won’t work.
