system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If I inhale a small insect, or swallow a drink the wrong way, and it goes in my lungs, does it stay there?

I was recently jogging through a some woods and definitely inhaled a small flying insect. It never got coughed up.
gpt
There's a possibility that it didn't make it all the way into your lungs, or stay in your lungs, due to little hairs call cilia and the mucus they are coated in. It'll push the little guy out so you can either properly digest it, or cough it up.  

There are some circumstances when something actually makes its way in to your lungs, in which case there's a small chance that the bacteria on the item can cause pneumonia.  

If you get flu/cold symptoms or have trouble breathing, then see a doc ASAP. Otherwise, don't worry about it. More often than not the coughing process dislodges it from the lungs (just maybe not to the point of being able to spit it out).