Earworm

A creature you touch (make a melee spell attack against an unwilling creature) is infected with a parasitic worm that takes root behind their ear. This appears like a small, raised bump under the skin, requiring a successful Intelligence (Investigation) against your spell save DC to detect. 

For the duration, you can use your action to hear through the target's ear as though it were your own. You can still hear out of your own ears during this.

Any effect that removes disease is sufficient to end this spell prematurely, otherwise the worm perishes by the end of the spell's duration.