Why not study snoot? wouldn't that preserve the harmful air we are breathing?

[link to kidshealth.org]

Mucus has a pretty important job — it protects the lungs. When you breathe in air through your nose, it contains lots of tiny things, like dust, dirt, germs, and pollen. If these made it all the way to the lungs, the lungs could get irritated or infected, making it tough to breathe. Luckily, snot helps trap this stuff, keeping it in the nose and out of the lungs.

Hey there retard...

Did you mean snot???

maybe snoot?

snoot
/sno͞ot/
Noun
A person's nose.
A person who shows contempt for those considered to be of a lower social class; a snob.
Synonyms
nose

see i knew i would get a snoot
the noes knows

nevermind there on it already damit they think of everything

[link to www.plosone.org]

Mucus secretions typically protect exposed surfaces of the eyes and respiratory, gastrointestinal and female reproductive tracts from foreign entities, including pathogens and environmental ultrafine particles. We hypothesized that excess exposure to some foreign particles, however, may cause disruption of the mucus barrier. Many synthetic nanoparticles are likely to be mucoadhesive due to hydrophobic, electrostatic or hydrogen bonding interactions. We therefore sought to determine whether mucoadhesive particles (MAP) could alter the mucus microstructure, thereby allowing other foreign particles to more easily penetrate mucus. We engineered muco-inert probe particles 1 µm in diameter, whose diffusion in mucus is limited only by steric obstruction from the mucus mesh, and used them to measure possible MAP-induced changes to the microstructure of fresh human cervicovaginal mucus.

nothing?well i think it is nature best filter