** Thanks for contacting with your health concern 1. Since both of you are suffering from an upper respiratory problem [sinusitis] thus consultation with an ENT physician is essential. PS. CT scan of the sinuses can help confirm the diagnosis. 2. As you have already taken the flu shot [high dose vaccine] as recommended by CDC, so get a second opinion regarding medical evaluation and treatment. [if any] till then: - steam inhalation to help loosen thick mucus. - regular nasal rinses. - Avoid heavy, slimy and acidic food, curd, mustard oil, excess physical exertion, sunlight-dust areas, exposure to strong winds, day sleeping, smoking, potato, green leafy vegetables. Cold water/food -Take old brown rice, soup of moong dal, black grapes, cow’s or goat milk, garlic, lukewarm water to drink, black pepper, dried ginger, honey. PS. Since you are allergic to medicines thus it will be a good idea to take any other alternative after getting the consultation with your Doctor.