Any external agents attack and sustain to act if and only if our body has the environment to suit them.. If dust is giving you problem means it is not the dust your body is changing.. Dust was/ is /will be there every where... Your body is getting dry..so the protecting layers like mucosal layers qualities are changing... If you are by nature defect then it would be by birth...But the problem is recent origin..That means your body is changing..
Some pathology is running .. Why so? What was the change in lifestyle you made recently? Check your food sleep activity pattern....
Next Steps
Add good lipids in food... like use filtered oils ..but never refined oils..ghee butter milk also a good source of lipids... which are essential to maintain the protecting layers of body... or "Kala" according to Ayurveda.
Health Tips
Put 3 to 4 drops of virgin coconut oil or melted ghee to both nostrils Daily
- just before bath
-when ever you go out smear these lipids inside nostrils..
-If sneezing starts then can also use ...subsides immediately..
Put generous amount of virgin coconut oil over head ..which lubricates all sensory organs.. including nose..
Nasal mucosal layers are having blood
lipid allowing property... can reach upto all sensory organs.. so these lipids itself maintain a protecting layer and dust etc agents adhere these lipids...so that your body remains stable..
Good to get a correction in lifestyle to avoid recurrence.