I am on a Delta Airlines flight and they just offered me peanuts. We usually fly American Airlines, so I was shocked. Luckily my daughter is not with me or I would be freaking out.  Why? I am the mom of a child with food allergies. And sitting near someone eating peanuts could kill her. Literally. Last time I checked, an airplane is not a great place to have a major medical emergency. Unlike milk or eggs or most other food allergies, peanuts somehow contaminate the air around them and even a trace amount in the air, similar to the way a smell works, can cause a reaction. So why the peanuts when so many have similar reactions? I have…