system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: I didn't cough while i was smoking but now I've quit for a week and i can't stop coughing. Why?
gpt
There are little hairs in your lungs that help clean by moving mucus in the lungs. When you smoke these hairs stop working as effectively, but when you stop they start to heal and clean, so you'll experience coughing/tons of mucus as your body catches up.