That use is not needed in a modern industrialized society
In other words it's vestigial
LOL...classic example of typical Darwinist doublespeak.
In that case, we are full of vestigial parts. Hair, teeth, pinky toes, pinky fingers...
What do we need noses for anymore? why not just have a hole in the middle of our face to breath through. And legs aren’t really all that useful anymore. We could get by with much shorter weaker legs and barely any feet at all.