[superfries]

I haven’t heard of this. Can you point me to a source?

[BlackAdderess]

Not sure which one you mean, but try this:

http://www.officer.com/article/12263320/dea-warning-to-law-enforcement-fentanyl-and-carfentanil-exposure-kills

I also posted links earlier for a couple of police officers stories turned up on a google search.