Yes, I wore a mask “donated” by our London office - similar to the N95 type. Our own office, face mask stockpile all disappeared from the pantry (where they are usually placed) within one or two days after Wuhan lockdown. Now, am sure London or other offices will definitely not donate or “help out”.
Anyway, discarded the mask after a while. Must breath forcefully to expel the air out of the vent at the side of mask, otherwise lots of exhaled air will stay within the masked area, making you feel hot and stuffy. For a short while, I feel empowered, like Darth Vader .......