16 Billion Units on the Scoville Scale!

The Carolina Reaper is the world's hottest pepper coming in at 1.6 million on the Scoville scale of hotness.  Now, a cactus from Morroco has obliterated that with heat on the Scoville scale of 16 billion units!  The active ingredient is resiniferatoxin. What possible use could that kind of heat be used for?  How about killing pain receptors in bad knees? Or killing pain associated with cancer?  The article found in wired.com has much more information on this unique and mind-searing level of heat!