Nice,
Thanks for the angle.
I am trying to find out if one will make me feel more secure.
Assuming a full CBRN filter I would think they would be effective against the mere H5N1.
Is this total overkill?
I would consider it if I had to treat a sick relative or loved one.
That is really the only reason I can forsee needing one. Or perhaps a loved one using it to protect themselves and treat me?