- Allergen AlertAllergen Alert is a spoon for infants that tests for common allergens within foods. Food allergies within children have risen 50% in the last 20 years, effecting 1 in every 13 children. That's 2 in every classroom. The majority of reactions are triggered outside of the home. Making parents increasingly worried about what goes into their infants food. For many people trying new foods is great but for those with potentially fatal food allergies it can be a dance with death. Allergen Alert makes eating worry free.