system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What happens to dust particles that get in to the eyes and lungs?
gpt
If they truly get deep into your lungs, they may become trapped there, but that's a relatively hard place to reach. Most are caught before then in mucus lining your airways. Tiny moving cilia work in concert to gradually move this mucus towards your throat, where you either swallow it or cough it out. 

Dust in your eyes is flushed out with tears, either onto the face if the irritation (And the crying) is great enough, or by draining into your nasolacrimal duct into the back of your nose/throat.