system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it that, when pushing medication through an IV, can you 'taste' whats being pushed.

Even with just normal saline; I get a taste in my mouth. How is that possible?
gpt
The medicine or whatever is being pushed through the IV makes it way through your blood into your lungs. when you exhale, the stuff now in the blood vessels in your lungs passes out your mouth in small amounts, so you taste it.