Since most of us have one or more fire extinguishers in our homes, here is the notice of a HUGE Kidde fire extinguisher recall involving those built as far back as 1973:
https://wtop.com/recalls/2017/11/kidde-recalls-fire-extinguishers-dont-extinguish-fires/slide/1/
I have a list of the brands/models affected in pdf, but don't know how to upload to this site...