Seeing as the facepieces on these last for years, and you can get a few months of use out of a set of cartridges if you're only using them for stuff like taking transit or attending concerts/other large events, they're pretty inexpensive.
Oh, also, they're better than even N95 masks for keeping pathogens out.
I'm not suggesting wearing an elastomeric respirator 24/7, but in particularly crowded settings, they've got serious advantages.
I wear one instead of my V-Flexes, when the condition of my face will allow it, and I vastly prefer them despite everyone else's complaining about how they make me look weird or whatever. I really recommend them if you have things like panic disorders or severe asthma (I have both) can can legitimately be exacerbated by wearing a lot of types of N95s or equivalent. I have one of the common professional 3M ones, and got it when I was regularly having to use public transit. I've flown in mine multiple times, which you absolutely can do safely if you don't ever take it off.
It's fucking 2023! We're in the future where it's weird to NOT wear one, if I trust cyberpunk artworks from the 80's.
