Comment by IshKebab

He's just honing his HN pedantry to a razor edge so he can point out that ackshewally it's not an air filter at all because it isn't restricted to gaseous fluids in the ratio of 0.78 oxygen to 0.21 nitrogen plus trace gases.

It can actually filter many types of gaseous compositions so it's really a gas filter. Have the authors even done a rudimentary PhD on filtration nomenclature? They are clearly unqualified to comment.

Seriously though I've seen enough of these sorts of Poe's that at least some of them must be serious. Must be weird living your life like that.