Singapore working to list etomidate as illegal drug; one third of vapes seized found to contain it : r worldnews IN PICTURE] ICA has stepped up checks to detect and deter attempts to smuggle e vaporisers into Singapore across land, air and sea checkpoints. E vaporisers are illegal in Singapore and the Government adopts a zero tolerance Is Vaping Healthier than Smoking? Raffles Medical Group We continue to advise exercise normal safety precautions #Singapore. Strict laws and penalties control vapes, e cigarettes and alcohol. Possessing or importing vapes, even in transit or for your own use, is illegal.