hi.. thanks for using HCM..
you have seasonal allergies and you are taking mast cell
stabilizer(montelucast) and levocetrizine.. this is prophylactic measure and it should be taken for 3 months for reducing the severity..
apart from that you need to wear mask, aviod exposure to the allergen..
take multivitamins with zinc to boost your immunity..
can go for desensitization of allergen, see your pulmonologist for this..
all the very best.