Chase stops by the lab, where Hadley and Taub are testing the dry cleaner samples. The three discuss their guilt over Foreman quitting and try to figure out what to do next. "We have to tell him," Taub says. "We can't tell him," Hadley immediately replies. I thought Taub was the coward, and yet, Hadley's the one who doesn't want to get in trouble. Also, I think she's looking forward to working at PPTH without her ex-boyfriend. Chase says there's a third way: they can tell Cuddy and beg her not to let Foreman quit. Taub points out that begging didn't work so well when Foreman did it, and then Foreman walks in and says the albuterol they gave Mickey, believing his illness was caused by dry cleaner chemicals, isn't helping and he is now coughing blood. Hadley knows why the albuterol was ineffective: her tests on the dry cleaning materials just came back and it turns out that the drug den dry cleaners is environmentally friendly, which means no harmful chemicals and thus no environmental cause for Mickey's illness. But way to go, drug dealers! The Earth truly is our most precious resource.
The next morning, House makes it into work, where the Cottages update him on Mickey's condition: the lung bleeding was caused by a pulmonary aneurysm, which Chase treated only for three more to appear. Foreman takes a look at the scans and says the aneurysms look like the kind caused by a fungal infection, which is consistent with Mickey's other symptoms. Hadley whines that she didn't see any fungus at the dry cleaners, but it was pretty dark there what with the mood lighting and all. She also points out that the steroids they gave Mickey earlier would have suppressed his immune system and made things much worse for Mickey than they already are. House says she has a good point there, but Foreman ignores it and says he wants to start Mickey on anti-fungal medicine before he dies. House agrees.
Foreman sets Mickey up with the IV and leaves so Mickey and Eddie can talk. Well, Mickey won't be doing much talking, what with the lungs full of blood and all. A lot of watery coughing, though. Eddie gives him a pan to spit the blood into and kindly wipes his mouth. All he gets for his trouble, though, is a lecture from Mickey about how Eddie is an "imbecile" for bringing Hadley to the drug den. Yes, because drug dealers often use words like "imbecile." Probably when they're in the middle of ordering supplies for the green dry cleaners they use to store their drugs. Eddie says it was the only way he could do something for his friend, just so Mickey can feel extra-guilty about everything. With that, Eddie says he has to go meet "the Big Man," but will stay with Mickey if he wants and send some other guy instead. Mickey doesn't hesitate to urge Eddie to go so their hard work will pay off. If he isn't going to let his own life stop him from seeing the undercover job through, then he sure as hell isn't going to let Eddie's.