I really don't think so. I don't recall seeing this happen to parents and that generation earlier. Perhaps it's the tremendous amount of chemicals/preservatives/plastics in everything now days.
Maybe. That's kind of what I meant with age. Continous exposure over time. It might not even be a chemical but a container interaction. Either we just didn't hear about it or it's more frequent today though.
There were people breaking out in rashes awhile back that were allergic to penicillin but hadn't had any. They got it from milk. Look at all the stuff on our food. I once asked a grocery why the apples were so red and shiny. He said they washed them with a wax. No tell what you can get from a can good if you don't wash the top first.