†Just goes to show that the old bromide (are there any new bromides?) is true.

The word "bromide" caught my eye. The dictionary does not say anything about why "bromides" are objectionable. I remembered "bromhidrosis" but dictionary doesn't give it. On Internet I immediate found a German site which defined it as "when the sweat stinks."
So, old bromides literally stink. But new ones are constantly being formed, alas.

Fr brome < Gr brÔmos, stench