Speaking of wood dust, just before this all happened I had purchased an RZ mask setup from Amazon for woodworking based upon online feedback. It claimed to be N95, but awaiting certification. It was deep in winter when I bought it, so no chance to use it yet.

Now if I search Amazon for the RZ mask nothing is found. That makes me think that this respirator "shortage" will be very long term for non healthcare folks, otherwise Amazon would just say it's out of stock.