Signs & Symptoms of Vaping Indonesia Declares Etomidate a Narcotic After Vape Misuse News En.tempo.co Etomidate, an anaesthetic agent that has been found in K pod vapes, will soon be made illegal in Singapore and listed as a Class C drug. Here's what you need to know about Warning: Etomidate in Vapes Some vapes are laced with etomidate and other dangerous drugs. It can damage your brain, disrupt your heart function, and cause fatal breathing problems.