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The Razer Zephyr Wearable Air Purifier
The box says the Zephyr uses "99% BFE Tested N95 Grade Filters"—BFE is Bacterial Filtration Efficiency. That's not the same as Viral Filtration Efficiency (VFE), and those standards are tested differently. Razer told us that it worked with a company called Intertek to perform the testing for BFE certification, and 99% is pretty good, considering the N95 standard is based on 95% BFE. Razer has also filed the Zephyr with the FDA. All that said, the Zephyr is clearly not a medical-grade mask; your surgeon shouldn't be wearing one... More here.
I am proud to wear a mask when out and about and despite being in the minority I remain so. This, however, is a completely different thing, but there is something so crazy about the design that I find myself wanting to at least try it.