A bromide is a phrase, or person who uses phrases, which have been used and repeated so many times as to become either insincere in their meaning, or seem like an attempt at trying to explain the obvious.
In his book, Are You A Bromide?, Gelett Burgess uses the terms Bromide and Sulphite to describe two differing views on how people think. Bromide minds are classified as being tied to tradition, while Sulphite minds are those that think more freely. The bromide mind "belie[ves] that each of the ordinary acts of life is, and necessarily must be, accompanied by its own especial remark or opinion." Meaning that a Bromide can be counted on being the one to remark on what others would take for granted, and as such not comment upon. Frank Gelett Burgess (January 30, 1866 - September 18, 1951) was an artist, art critic, poet, author, and humorist. ...
A few example bromides:
"He is told that lie so often that he believes it himself, now."
"This will be just like taking candy from a baby."
"It is not the heat/cold, it is the humidity."
"I do not know much about art, but I know what I like."
Methyl bromide is used primarily as a pesticide to fumigate soil, spaces, structures, and commodities.
Exposure to high concentrations of pure methyl bromide may cause inflammation of the bronchi or lungs, an accumulation of fluid in the lung, and irritation of the eyes and nose.
Methyl bromide is a neurotoxic gas that may cause headaches, dizziness, visual disturbances, ventricular fibrillation, pulmonary edema, ataxia, convulsions, coma, and death.