Nice glib answer. Mask and other equipment no longer available. I'm glad you've got it all figured out for yourself. I feel so welcome on this forum now.
It's not a glib answer, it's a valid question, and if you'd tell what mask you used to use, it's possible someone might have one, or be able to say "well, the xxxx is very similar to what you had, that might be a good one to try.