No problem, man, and thanks for asking before making your decision. Some people love synthetic cannabinoids, but a majority of what I've seen and the stories I've heard are like they're straight out of a nightmare.
I've also seen and heard a lot about inmates smoking the shit, because it won't show up on the UAs that they get randomly hit with. The shit's just..... it's not good, man. You might not be able to take this dude seriously but try watching this video for a little perspective. It's not just him talking, the dude has a literal shit ton of footage he recorded throughout his bid of, among other things, inmates just FUCKED UP from smoking herbal blends. It's a little different than getting pure synths but not by much:
This part is off-topic, but if this does catch anyone's interest here's a vid of just raw footage recorded from a cell phone smuggled into prison: