Main cause of cough falls in to Three categories 1.allergic 2. Infections 3. Habitual Most of the packed foods have preservatives Avoid them Don’t dump your bed room with to many items As they accumulate dust Bed it self may be a culprit Pet animals too can cause allergies Do minimal investigation Say CBC Motion test And if needed x -ray To rule out infection If so treated by your doctor Please complete the care And recheck with him Habitual is last one to be kept in mind If so ignore it

Get food allergy test done so that you avoid food that may be causing it