The unit is super. Some improvements could still awesome:
The water tank should have been deeper. Especially with the attachment for the nose, you want to use the device while watching TV. However, the water may spill over. This can be, if you did not comply with the capacity or set at the highest level.
Would be good if you could wash the entire part completely. It contaminated halt by überschwappendes water etc quite fast. But what do you expect for a device in this price range also. It served its purpose. I use it mainly for flu u. Cold. A stuffy nose is not running and you can sleep in spite of illness. Once properly slept well and you're almost healed.
You are doing nothing wrong when you buy the device. No I'm not the Werbebauftragte this company but S.Topal if you google my name you can see that I have nothing to do with this matter. But what if someone does good, one should praise it sometimes. I do not write that there is nothing better. But the value for money is perfect for me personally.