Singapore is worried about a rise in drug laced vaping. What is happening, and what is the drug etomidate? Singapore The Guardian Vape Tourists in Singapore May be Deported Nicotine Insider Singapore boosts vape crackdown on air travellers to stop e vaporisers from 'taking hold in society' South China Morning Post Vaping Plays You No, Singapore's vape ban didn't cause the etomidate crisis Saw Swee Hock School of Public Health