Can teenagers get IPF?

No Matthew, they can't.
Just in case you don't feel like reading, Here's the short answer.
IPF usually occurs in adult individuals of between 50 and 70 years of age, particularly those with a history of cigarette smoking, and affects more men than women.[2][5]

They can get the idiopathic part, but not the pulmonary fibrosis part.

Yes, if you sniff cinnamon