@Henry2326 and everyone, Thank You for all the informative posts.
I am way behind on thread, but I have been reading a lot of concern about the lack of masks for the public. Maybe we just have to get creative like the Asians.... Plastic is impermeable - but you need to be able to breathe. Before all this, I saw surgeons using this type of shield without an additional mask for tasks like stitches, lancing abscesses, etc.
Something like this is protective for your face, perhaps attach some gingham, a bandana around the bottom. For self-protection purposes, just clean it (for surgery, they are disposable). You probably cannot buy one, but can you make one?
I am eyeballing those clear plastic 2-liter bottles here... box cutter... if you do this, the plastic is SHARP, be careful and tape those cut edges. (just an idea)
Guess what this is -
Those are veterinary Elizabethan collars for pets so they dont lick or scratch following surgery, etc. Like this:
You probably can buy one at Petco. But what if a human put that on their head with an attached drape gingham or some material around the bottom? The correct size would rest on head and shoulders. I am

two of those I already have in my house right now...
What about Halloween masks, plastic party masks? Not fully protective, but something to start with to make a good enough mask.
Avoiding a ventilator makes a lot of things not seem so paranoid or silly.