The human mouth has many bacteria in it and can get a variety of diseases and conditions. Brushing your teething and using mouth wash can help kill some bacteria, but some conditions require more. When you are experiencing a metallic taste in your mouth, you may think it is just something you ate, but actually, a metallic taste in your mouth is a condition called dysgeusia. It is not life threatening, but can be inconvenient. Dysgeusia can be caused by upper respiratory tract infections, hormonal changes, some medications (such as Capoten or Flagyl), tobacco smoke or nasal polyps. Proper mouth…