Are smart masks really that smart? | To The Test

Masks may be optional when outdoors in Singapore, but they are still required in many other countries. With travel making a comeback, ST looks at three smart masks with motorised fans that claim to be more comfortable than surgical or reusable masks. In this video interview, Assoc Prof Wan Man Pun from NTU’s School of MAE explains the three main tests masks undergo: bacterial filtration efficiency, particulate filtration efficiency, and breathability.