That was awesome and straightforward and thanks for the Amazon tip on the masks. I ordered two for my huge medic bag.
I don't know if others do this as well but, I have a HUGE medical bag full of stuff I have collected ( I don't keep items out of date) with many items out of my knowledge areas like IV's, syringes, and such. My thoughts are even if I don't know how to use some items, there might be someone at "the scene" that does and maybe I could save a life just by having something someone with the knowledge could use to save that life.
I have the room so I figured carry all I can. I have other med bags full of stuff I know how to use. But when I travel off-grid or on the trail, I always have this huge bag on hand. Friends call it my "end of days" bag it has so much stuff.