"Hey, do you want some?" your friend asks as he offers you a mouthwatering homemade brownie. You're tempted by the delicious dessert, but then you see the crushed peanuts on top. Darn! You're allergic to peanuts. Maybe just one little bite? Nope. If you have a food allergy, even a... "Hey, do you want some?" your friend asks as he offers you a mouthwatering homemade brownie. You're tempted by the delicious dessert, but then you see the crushed peanuts on top. Darn! You're allergic to peanuts. Maybe just one little bite? Nope. If you have a food allergy, even a...