But there is no strong evidence for this claim, and plenty to argue against it.
It and other synthetic opioids like carfentanil are indeed more potent than naturally derived opioids like heroin or morphine.
So the risk of a fatal overdose from typical consumption is more likely.
A Drug Enforcement Administration (DEA) chemist checking drugs reportedly containing fentanyl.Image: Don Emmert/AFP (Getty Images)
Even in its powdered form, the drug isnt absorbed quickly through the skin, according to expert toxicologists.
Medical fentanyl can be delivered via dermal patch, but these doses are slowly absorbed over hours to days.
There are some potential scenarios in which fentanyl could be dangerous to passersby.
But its a solution in search of a problem that doesnt really exist.
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