The word «allergy» was coined as a medical term 100 years ago (1906) - only comprehensible to scientifically interested doctors. Nowadays it is part of everyday language.
One is «allergic» to everything (it is almost common courtesy!): to flowers or grass pollen, cat hair, parrot feathers, to mite feces or chicken eggs, to carrots, chocolate, sauerkraut, to wasp stings, hazelnuts, landjäger and shrimps, even to one's boss or the tax office, and finally - even if more rarely - to bread, baked goods and confectionery.
