Dust in the air

What is in the air
Never seen anywhere
Particles of despair
Squint all you can
You'll never see them
Or a buried stem
What could these be?
Those items unseen
It baffles humanity
The mystery is in your inner mind
These particles revealed at this time
Thanks to the angle of the light
The dust in the air comes into sight
Now that you can see
The dust that you breathe
Floating in the breeze
It surely makes you think
That even when you blink
The dust is on the brink
Now look what you've done
Inhaled it in your lungs
At least it's not dung