Viral videos showing disoriented individuals after vaping have raised concerns in Malaysia about the spread of drug-laced liquids within the booming e-cigarette market. Police are investigating and issuing warnings.

Viral “zombie vape” videos of young Malaysian men appearing dazed and disoriented after vaping have intensified concern that drug-laced liquids are spreading through the country’s booming e-cigarette market. The clips, shared widely on social media over the past month, showed local men slumped on the ground or behaving erratically after allegedly inhaling piu-piu or piao-piao (online slang for drug-laced vape liquids). At least two viral cases triggered arrests and fresh police warnings...