Let's see what @lilianna has to say - she has owned one for several months, but only for backup use.
Also note, on their website it says it is suitable for albuterol and .9% saline - wondering if 3% or 7% would clog it. Also the Atomization Ratem0.2ml / min which means 20 minutes per 4ml vial - under ideal conditions.
Finally, I could not find sterilization instructions, except AI generated generic ones, some mesh units require weekly sterilization in alcohol or vinegar, so something else to store...