Tokyo's Toxic Gamble: How a Mysterious Stench Exposed the City's Safety Blind Spot A strong, unidentified smell at the Ginza 6 shopping complex in Tokyo sent at least 19 people to hospital.
The incident has raised more questions than answers about the city's preparedness for emergency situations.
The story appears to be a bizarre and isolated event – a man spraying an unknown substance at a cash machine, causing widespread discomfort among shoppers.