SINGAPORE - Japanese retail chain Don Don Donki has pulled helium canisters marketed as voice-changers off its shelves here amid a safety review, said Singapore's consumer watchdog on Dec 19.In response to queries from The Straits Times, the Competition and Consumer Commission of Singapore (CCS) said the chain has voluntarily stopped selling the product and is reviewing its compliance with applicable safety standards.The canisters, which were on sale for $19.90 each, were advertised as being able to make users' voices more high-pitched when inhaled.Each canister contains an 11.6-litre gas mixture, most of which is helium.Photos of the product show that it is recommended for use only by consumers above 16 years old. There are also labels warning that rapid inhalation of the gas could result in serious injury, asphyxiation or death.CCS said that to date, its Consumer Product Safety Office (CPSO) has not received any reports of people feeling unwell after inhaling gas from the canisters.However, if products are found not to have met applicable safety standards, the CPSO can direct suppliers to stop selling them, the watchdog said. Read more