To go along with the misuse of the word "chemicals", that is used to imply chemicals are bad when everything is a chemical, I'll mention "temperature" when used in health care, even by professionals.
I have a temperature. I am not ill, so it is normal. My kid had a fever - an above normal temperature. My husband and son both are normal at 96 degrees, but that is another issue.
I still cannot adjust to people who say something "smells", meaning it has a bad odor. I smell because I have working olfactory cells, or I smell fresh because I used light perfume. The trash does not smell - it stinks or smells bad. Smell does not stand alone unless it is one of the senses.
I'll never win these because they are used so universally, it seems, but they grate on me.