Police officers are collapsing after touching fentanyl, but experts say you can't overdose from skin contact. The likelier story? Panic attacks.

The video is harrowing: It shows a San Diego deputy crumpling to the ground in a parking lot after accidentally touching white powder during an arrest.

"I got you, OK? I'm not going to let you die," someone said in a voice-over. Then someone yelled, "I need Narcan!"

In the video, Deputy David Faiivae, the officer in training who collapsed, wiped away a tear after describing how his lungs locked up that day in July.