This academic paper describes a study done to address the false belief among law enforcement that there is a risk of overdose from accidentally inhaling or touching fentanyl. The results showed that a brief training module can have a corrective effect on this false belief.
Del Pozo, B.,Sightes, E.,Kang, S.,Goulka, J.,Ray, B., & Beletsky, L. A. (2021). Can touch this: training to correct police officer beliefs about overdose from incidental contact with fentanyl. Health & Justice, 9(1), 34.