How do I verbs the mineral deposit on my vaporizer/humidifier? It automatically shuts off if it have any sort of build...

It automatically shuts off if it have any sort of build up and the only passageway I've been competent to get it bad is by scraping it near a knife but this is approach too hard to do. Anyone know a better path? Something I could do regularly please.
New cover case smells horrible! Help!?
Answers:    Vinegar. If it's really built up bad, use some toilet bowl cleaner 1 time...(use gloves and enjoy good ventilation). After that, some vinegar surrounded by the water once/week would be polite. Apple vinegar smells better.
How do I receive a yucky smell out...