I use a nebulizer - and I am an adult without geriatric issues! I'm not sure how I got it - I was grumbling to my pulmonologist about my breathing problems (had a rough time getting the asthma under control) and in frustration asked him for a "switch" that I could use to turn the cough off. Next thing I knew, he'd ordered the equipment for me - and yes, it has a "switch", although not what I'd had in mind!
At any rate, I think it might help a bit more than the inhaler form of
Xopenex...maybe because it's over a longer duration (the treatment), and I relax more while I'm using it? I have adult friends who say the same thing about their machines. But I still couldn't see using a nebulizer for anything more than a "rescue" treatment.