If you have intense allergies and you're travelling, you want to be prepared for any issues that might arise. For one, it helps to know how your airline handles allergic reactions. Many of them have detailed policies, and this chart lists the policies of 13 major carriers.
You probably already know most airlines have a detailed peanut allergy policy, and it's usually spelled out on their respective websites. But if you dig deeper most airlines have detailed precautionary measures and emergency protocol they take for all kinds of other allergies too. Allergic Living researched and put together a list of the allergy policies of 13 major airlines. You can see United's in the screenshot above, but head over to the link below for the full chart. (The listed airlines are from the US and Europe, although some do offer flights from Australia which could make the info highly relevant.)
Comparing Airlines [Allergic Living]