And the loads of people who have been infected with the common cold, the flu, and other viruses and never develop any allergies? Are you saying you think this o

And the loads of people who have been infected with the common cold, the flu, and other viruses and never develop any allergies? Are you saying you think this only affects a subset of people? Out of curiosity, what lead you to this conclusion? Personally I've had countless colds and even the flu a few times, and no allergies. In fact, most people I know get a few colds every year and have no allergies. Actually, basically everybody I've ever met has had the common cold at some point. Maybe it's responsible for everything.