@davis5663
I'd like to be able to sterilize, but I don't think it's a high risk. The cup is washed and rinsed in tap water at 135⁰ and air dried - there may be NTM in the water, which may survive drying, and then may float into the saline solution and I might then inhale it, and those bacteria might survive the 7% saline and gain foothold in spite of my airway clearance. That's a lot of mays and mights.
I agree with earlier comment that feedback and discussion with the manufacturer is best solution. But in the meantime, unless I hear reasons to the contrary, I think the benefits of the Volara outweigh the risks.