[ThomasThomas]

The food allergies have killed off all those people over the years. That’s why there aren’t older people with food allergies.

[Kipp]

Hilarious video of song about preparing a holiday meal for a bunch of people with different food "allergies":

Holiday Dinner

My SIL claims to be allergic to onions and garlic. I've made food for my MIL that contains onions and garlic. When my SIL visits her mother and eats that food, she suffers no ill effects.