In 1999 Belgian teenagers started to become ill after drinking Coca Cola. Many ended up in hospital and the government banned the sale of all Coca Cola products but the fizzy drink was given the all-clear so what was making the children sick? Claire Bowes has been speaking to Belgian toxicologist, Benoit Nemery, about a country in crisis. Photo: A poster saying 'out of order' is stuck on a Coca Cola vending machine in Mouscron, Belgium in 1999. (Credit: Philippe Huguen/AFP/Getty Images).