Welcome in H.C.M. for writing your query.
I have gone through your query regarding rotten smell which you feel for last one year, your family physician had not get any abnormality in your nose.
I would like to tell you, the problem you are having is called as HALITOSIS
. This halitosis is notice in following conditions-
& carious tooth
Above are the commonest causes are halitosis and to find which one is with you a thorough examination by E.N.T.specialist is necessary.
Hope your query is explained now