Bad mouth smell. I became lean!

Sir, I am suffering from bad mouth smell from my childhood. The smell restarts again even after i brush every time. After waking up of any sleep, if I spit out then it comes like light mixing of olden days Colgate white tooth powder and clearly I feel the sense of something is applied on all over my teeth. Moreover, I had a small lymph galnd on right side of thorat untill 25 years. After it disappeared itself Also I was very stout at the age of 4 years old and consuming more food. If small disturbance happened at night, then I waked up, asked food at that mid night also. Then my mother bought me to a doctor. He gave some oral drops syrup. After consuming it , very next day itself I had taken very very little food from that day onwards. Agin we went to that doctor but he told that who will give that syrup. According to villagers, Some times his mental condition is not sound. I am thinking that this may be also a reason as any digestive related issues. After that gradually I became lean