Question

Pick the odd one out.

Milk allergy, Pollen allergy, Fish allergy, Egg allergy.

• A. Milk allergy
• B. Pollen allergy
• C. Fish allergy
• D. Egg allergy

Answer 1

The correct option is B

Pollen allergy

The entry route of milk allergy, fish allergy, and egg allergy is the mouth. Whereas, the entry route of pollen allergy is the nose. Therefore, pollen allergy is the odd one among the list of allergies given. Apart from this, pollen allergy is usually seasonal, whereas the other allergies are perennial.