What are some interesting respiratory diseases caused by specific pathogens?

[Ophelia]

I'm doing a research project for my microbiology class and I need to find an interesting disease that affects the respiratory system that's cause by a specific pathogen.
The diseases that are already taken are whooping cough, SARS, RSV, Anthrax, and a bunch of fungal diseases.
I'm looking for one that is a bit more uncommon and interesting.
Any suggestions?