Question

Application based questions.
When you go to a new place and suddenly you started sneezing, wheezing for no explained reason, and when you went away, your symptoms disappeared. Why it is so?

Answer 1

Some of us are sensitive to some particles in the environment. The reaction in question could be because of allergy to pollen, mites, etc., which vary in different places. Allergy is due to the release of chemicals like histamine and serotonin from the mast cells.