1. this is probably excess wax/phlegm/kapha in the external ear which if in excess may cause ear congestion, reduced hearing and stuffiness.
2. Increase your fluid intake (warm water with lemon juice and honey) and avoid cold
and constipating food (dairy products,sugar,wheat
3. take diet rich in sulphur (garlic,onion) which helps in relieving congestion and increase intake of herbal tea (Lime,ginger,Fenugreek)
4. Ayurveda 'Jal neti' is effective in such conditions.
5. Vitamin C
rich diet is beneficial to increase the immunity.