Snopes: A New Drug Cocktail Called "Gray Death" Can Kill On Contact Or By Breathing In Air

Can the New Drug 'Gray Death' Be Transmitted Through the Air?

A potent new mix of drugs includes carfentanil, which is used to tranquilize elephants - 10,000 times more potent than morphine

https://www.facebook.com/snopes/posts/1069549663189552

"Gray Death" Killing First Responders

http://thefederalistpapers.org/us/new-drug-gray-death-can-be-transmitted-through-the-air