Hi, Welcome to Healthcare Magic. I have reviewed your query and here is my advice. You are allergic to certain substances around you. You need to find it out. You have to take anti allergic tablet Levocetrizine 5 mg 1 tablet at bedtime for 3 week. Continue the nasal spray. Take steam inhalation through mouth and nose. It is likely that whenever you stop those medications you will have symptoms. So you have to increase your immunity by doing yoga, moderate exercise. Clean your pillow cover and bed sheets. Carry on dusting to your room. I hope I have answered your query. Let me know if you have any further questions. Take care.