I seem to be allergic to whatever that terrible smell is," said Gateman when the urge to sneeze had finally subsided."What terrible smell?""The air," said Gateman. "It smells...different.""That's called oxygen," said Professor Boxley. "Freh air. No cars, no buses, no factories; just pure, clean oxygen.

Food allergy is one of the least diagnosed and most prevalent causes of symptoms, especially depression.