Well, virologists are still wearing pressurized suits instead of masks, so there’s that.
They’re wearing pressurized suits while working in a laboratory environment specifically designed for highly contagious and deadly diseases as part of a standard protocol.
They aren’t wearing pressurized suits when they go to the grocery store. But I’ll bet you a dollar to a donut they ARE wearing masks in that environment. Not because it makes them immune to anything, but because it REDUCES the risk in both directions.