Question

When you go to a new place, you suddenly start sneezing, and when you go away the symptoms disappear why?

Answer 1

1: Definition of allergen
Allergens are substances usually present in the environment that cause an exaggerated immune response in the individual. For example, dust mites, pollen etc.

2: Allergic reactions
Allergens stimulate the following:
● Release of histamines from mast cells.
● Release of IgE antibodies.

3: Symptoms
Runny nose, sneezing, watery eyes, breathlessness etc. are the response of our body to allergens present in that place.