There really is a lot of “chemophobia” going on....
Food additives may be undesirable, but not for any of the reasons being postulated here.
Bromine in food is not “corrosive”, nor do “antibodies form against it.”
Bromine gas is corrosive. Chlorine is corrosive. But that doesn't mean NaCl, table salt, is corrosive.
Chemistry is a complicated subject, and misinformation can lead to hysteria.
Avoid additives if you believe they bother you, but perhaps also avoid drawing poorly reasoned conclusions.
You don't have to be a rocket scientist to know chemicals aren't food.