Smokers gave a home to bacteria that now sicken people with CF (arstechnica.com)

Smoking can really clog up the lungs, even for people who’ve never been near a cigarette. Turns out that smoking habits from the early 1900s are still inflicting damage—not on tobacco users or their families, but on people with cystic fibrosis.

"CF treatment centers were hotbeds for transmission" wasn't clickbaity enough.