Ok so these articles and resources always tell you how to acquire and use naloxone, and people say they never leave the house without it. Great. I want to carry some, too. But the thing these articles always leave out is how to identify somebody who might be experiencing opioid overdose. Tap on their shoulder to see if they're responsive, sure, but if everybody can't do that to every person napping on the ground.

What can I look for, in passing, to tell the difference between somebody experiencing an overdose and a houseless person just trying to get some damn sleep?