So in an attempt to clear both my & TRex's congestion, I picked up two of these things: a grownup one and
a childrens' one.
They aren't all that useful. The two nights we've used the thing in TRex's room, her nose has been MORE stuffy and her cough worse than they are when we're just using the 1975-era vaporizer. I put the adult-strength one in our room and the smell of it irritated my throat so much that it actually made my cough WORSE rather than better. Four days later, there's STILL a hint of the overpowering menthol smell in our room.
They're also a racket in much the same way that the Schick Intuition razor is a racket - the little vapor pads are good for 8 hours of use. What they don't tell you is that they're not good for much more than 8 hours of non-use. We tried it for a few minutes the first night, and then decided to go back to the old-school vaporizer, so I just stuck the Vapo-Plug in the cabinet. When I got it out a couple of days later, it was completely spent. Also, they're good for 8 hours. My child sleeps for 11 hours. So we've been using the water vaporizer from when she goes to bed 'til we do ANYWAY.
So yeah. The upshot is, don't bother.
And now I think my disease is transmogrifying into a sinus infection. Lovely.