That's interesting, and it does make sense -- if you're not using opiates, tiny residues of fentanyl can be very dangerous. You would think that dealers would

That's interesting, and it does make sense -- if you're not using opiates, tiny residues of fentanyl can be very dangerous. You would think that dealers would be more careful than that -- killing your customers is bad for business -- but it makes way more sense than intentionally cutting fentanyl into pot.