Acting chief trade control officer of th

Acting chief trade control officer of the Customs and excise department, Ng Hing Tong shows packets of fart bomb toy during a press conference in Hong Kong, 21 December 2004. The Hong Kong customs office on Tuesday kicked up a stink over what it called a "fart bomb toy," describing it as unsafe. The small silver metallic bag, showing a cheeky boy with his trousers down emitting a cloud that reads "boom", contains a powdered sulphur compound and a small plastic bag of diluted acid. The package would give off a "disgusting smell" as well as up to 20 milligrams of hydrogen sulphide when pressed. "Hydrogen sulphide may cause nausea, headache, breathing problems as well as eye irritation and exposure to high concentration could cause acute intoxication." AFP PHOTO/TED ALJIBE (Photo credit should read TED ALJIBE/AFP via Getty Images)