Omron MicroAIR U100 Instruction Manual page 20

How to clean the unit after each inhalation
4. Fill the medication container with water and nebulize the water.
To prevent medication from drying and adhering to the mesh
after use, nebulize the water for 1 to 2 minutes.
5. Remove the mesh cap from the medication container, then disassemble the medication container
from the main unit by rotating counter-clockwise and pulling-up.
Note: Remove the medication container after discarding the medication.
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Water
Do not inhale water.