The page below of our Control guide contains a walkthrough for a side mission called What a Mess: Clear the Mold.
To start the mission, pick-up the note from the board found in Janitor's Office To get access to this task, you first need to complete the previous task: What a Mess: Remove the Clog.
Walkthrough: Your task is to locate and clear the mold in Medical Wing.
The first clot is in the main room, it is easy to find.
The second target is over one of the rooms from which the steam rises.
The third targeted mold is on the ceiling, near the door leading into the room with the first clot
The fourth mold is on the ceiling, in the corner of the room with the first clot.
The fifth targeted mold is in the room with lots of boxes and luggage.
The last targeted mold is the most difficult to find. You need to look out the ruined door - the mold is hidden behind the rock.
As a reward, you will receive materials, modifications, and three skill points.