Yes. An N 95 mask needs to be fit to the individual and fit tested under various conditions. In addition there is a specific way they have to be put on and removed. Men with facial hair cannot use them they won’t get a proper seal. Without good fit and instruction in use you are wasting your money. A good test for removing masks and gowns appropriately is to put chocolate sauce on them. after removing them you should have no chocolate sauce on you . Harder than it sounds.....
That’s WAY too much work for me.
I’d rather just duck society until it passes :)