I follow the advice of my pulmonary nurse. Soap and water soak for 10 minutes or more once a day for neb and Aerobika, air dry on clean paper towel, alcohol bath 15 minutes every week or so. Carry a small covered container and supplies to do when traveling.

Inhaler cases and extender weekly soap and water soak. If I remember I grab the inhalers from my purse and backpack too. I figure they need cleaning from bouncing around in there even if not used much.

My daughter has her students wash their inhalers or neb cups out with soap and water if used in her office.

We also are diligent about scrubbing reusable water bottles lids and straws with HOT soapy water and brushes. Haven't found any I like that survive the dishwasher for very long.
Sue