We don’t eat Mayonnaise since my Wife did a health and safety at work course and was told Mayonnaise being made with Eggs it could cause a serious illness. Since then most bought sandwiches contain Mayonnaise so we search for non Mayo sandwiches when we are out and need to eat.
My wife also made the mistake of taking a H&S course aimed at food hygiene. IMO a major mistake.
I am nearly 78, eaten mayo as long as I can remember and (I think) I am still here.