While this may not be exactly what you are looking for - I've used the Sabre ReadiMask product. You can find them on ebay, sometimes on Amazon, with police equipment vendors and direct from the ReadiMask site. https://readimask.com/professional/

Here is a youtube video about it -
https://www.policeone.com/police-product...BXpu5ksW4duNbn/

I got a dozen of them when I retired and all this current pandemic panic set in. I have not had to use them for that (yet) but will feel a lot better with it then the "surgical" ear loop mask some people (badly) wear when going out. It is rated by the manufacturing company for smoke... but YMMV.

Paul -

I saw Doug's post and that looks to be a "better" product by far for fire/smoke incidents.