If you look at the petapixel article, they complain about the speed (10mb/sec not 100) and have serious doubts about the reliability. Using this for backup or for security cameras sounds like a bad idea. It could still be good for some things like carrying your movie library on your phone, while still having a stable copy at home.
See if there is anything useful here:
Unfortunately those seem to be earloop style masks though.
The 3M 6200 (elastomeric half facepiece respirator) is available in different sizes. I have the medium and it fits me ok, so you might see about a large. This type of mask makes you look like Darth Vader so I tend to save it for special occasions.
I’ve had pretty bad luck with the Gerson 3230 since they fall apart rather rapidly. I bought a box of 50 and still have a few left, so if you want, I can probably send you a couple to try.
I do like the 3M Aura 9205 except for the rubber straps, but again, they are sized ok for me and might be too small for you.