The solution to my leaking humidifier came about very easily.
The first day I thought I had to check with the company who made the humidifier. I found out these humidifiers are no longer made and that if you were very, very lucky you might find parts. I then checked out stores that had sold the humidifiers. I found a surprising number of part but no hoses. That took care of the first day.
We've dealt many times with a man who runs a small retail outlet for a plumbing supply company. So the next day I said we'll go there first. Were we lucky. He was able to supply us with all the necessary parts . So :7 ft of hose, two ferrules, two inserts and a copper compression nut . Put them together and we were good to go.
So with a little help from my friend things were repaired quickly and easily.