[SisterK]

For all I know, she was blacking out.

My place of work is mask free. Some clients are relieved to not wear a mask, but others will not be liberated.
I have noticed a lot of the times the mask people have slurred speech. Not just muffled speech, but slurred I-am-depriving-my-brain-of-oxygen-speech.

[Salamander]

https://www.humorousmathematics.com/post/face-mask-dangers-hypoxia-reduced-immune-efficiency-causation-of-covid-19-symptoms