He gets cold easily in every season. Blocked stuffy nose. At times, the mucous is excreted by blowing but other times it stops hence he suffers blocked nose and it disturbs his sleep. We get odour also from his breath n my husband says his breath is infectious. Because once he breathes into his nose,the next hour he gets some odour and starts suffering from cold symptoms. I feel he has mucus stuck in his nose and throat areas and it's decaying causing mouth odour and breath odour. Pls advice.