Floating dust Particles

[Michael Szalapski]

You might try this tutorial:
https://www.videocopilot.net/tutorials/ancient_titles/

– The Great Szalam
(The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

[Aleksey Tarasov]

As an alternative to Trapcode Particular, you can use overlays with floating dust particles.
Check out this link: Organic Dust Particles