Use KN95 or KF94 masks if N95 hard to find during haze, says health expert
Public health expert Prof Dr Helmy Hazmi from UNIMAS advises the public to use alternative masks like KN95, KF94 or FFP2 if N95 masks are hard to find during haze. He said three-ply surgical masks still offer some benefit even though their protection against PM2.5 is lower, and advised against staying outdoors for long during severe haze.