[Margaret Pilkington]

I get what you are saying, but I don't know about you.....many people(me included) buy gadgets and never use them......we have an unused foot spa somewhere lurking in the house. I would be loathe to buy a facial sauna for this purpose(and I use steam inhalation quite a lot)......they are bulky items, you need to have somewhere to store it....and it may get very little use.
I also have a Nelsons inhaler...which is fine if you just want to loosen chest secretions, but it is of little use for nasal congestion....or for reducing the viruses that lurk in the nose.
Yes my method could be seen as dangerous, but as long as you appreciate there is an element of risk involved then you can make allowances for it.
It is a method I use frequently......and I know it works for me.......and it requires only a modicum of sense.