Strong odor from mouth goes 15-25 feet.

Hi , from last couple of months I am facing strong mouth odor and bad sour taste  that goes away for about 15-25 feet away... People can caught when I go outside like traveling office the intensity of smell is very strong it goes very long... Its really shameful to go outside because people point out that odor many of them put their fingers in their mouth and looking at me  for pointing out that odor...so my question is which condition causes that strong and intensified odor that travel many feets away... And which doctor visit and test need to be done to rule out possible causes.. please  guide me by giving your valuable time... It's ruined my life I never look straight in someone eyes.. I don't go with friends.. It destroy my career and confidence and try to make me weak... Update 1: I don't have any systemic disease Update 2:there in sour taste in mouth Update 3: It smells like :- 1)alcoholic little sour not 100% alcoholic 2)fecal. Your help & suggestions greatly appreciated.Tnx