Originally Posted by
Ancient Observer
The Official NHS masks require a "Fit Test". Basically, they fit one on you, and then put some smelly/tasty stuff near you. If you can either taste or smell the stuff, the mask isn't working.
Don't just dump a mask on your face.
If it was up to me, I would call it the fart test, but the NHS insist on calling it a Fit test.
And the good ones are not all that easy to breathe through. What logic are American and Delta using by making the wearing of masks optional, except for crew.