Someone close to you may be using a drug they never intended to touch. Fentanyl now shows up in counterfeit pills made to look like prescription medication, and it gets mixed into other street drugs without any warning. That means exposure often happens by accident. Knowing what to watch for matters, because early recognition gives you real chances to act. Small physical changes, unusual drowsiness, or shifts in behavior can point to something serious, and noticing them is often what keeps a person alive.