A warm fermentation can lead to off flavors, some of which may smell medicinal. But it's possible you could have gotten an infection or maybe didn't rinse out the idiophor well enough.
I don't use idiophor, having instead chosen Star-San, which is a no-rinse sanitizer that does not affect the taste or quality of your beer. It's relatively inexpensive and one 5-gallon batch can be used across several brewing sessions. Many of the HBT'ers hear swear by it, but there are also a good share of people who use bleach, idiophor, heat, and other options (it's a very popular debate about which method is best).
I'd suggest trying Star-San. Not needing to rinse is a good thing. Just be advised that it isn't a cleaner, just a sanitizer. Anything that touches your post-boil wort and beer should be sanitized. A spray bottle of Star-San is a good idea too for spraying items that you can't fill with or dunk into the sanitizer.