The following is a link to a NIOSH webpage on fentanyl exposure to emergency responders, which includes recommendations based on best available evidence, https://www.cdc.gov/niosh/topics/fentanyl/risk.html
This is a link to a related NIOSH science blog,
This is a link to guidance developed by the Interagency Board for Equipment Standardization and Interoperability, https://www.interagencyboard.org/sites/default/files/publications/IAB%20First%20Responder%20PPE%20and%20Decontamination%20Recommendations%20for%20Fentanyl.pdf.
