I have problem of bad taste and bad breath in my mouth since 2 year. My throat is most of the time get sore and feel wierd kind of taste in my mouth. And cause bad breath. I brush teeth twice a day and use mouthwash but didn't get relief. What could be the possible reason, how it can be diagnosed? Which test is required? I don't interact with people because of bad breath. Plz suggest what to be do??