I'm willing to bet someone thought that because of how extremely fine graphene is, it would be even better than activated charcoal for filtering tiny particles.

I'm willing to bet someone thought that because of how extremely fine graphene is, it would be even better than activated charcoal for filtering tiny particles. That of course ignores that it is a super-fine particle of the kind you should be filtering instead. It all reminds me of how coal miners used to purposely inhale McIntyre Powder, which was pulverized aluminum, to protect their lungs, only to end up with different medical problems. Unflatteringly, this also happened in Canada. Apparently we never learn.