A nose by any other name

Nurse: What brings you in today?
Pt: I have a funny taste in my mouth.
Nurse: Is there any reason you can think of that might have caused this?
Pt: Well, I recently started nose drops. And since then I have a funny taste in my mouth.
Nurse: Well, that can happen with nose drops, they...
Pt(interrupting):I was using them, and then I noticed that the bottle said to shake gently before use. I didn't do that, and now I think I've been poisoned.
Nurse: Oh.......