1 If the smelly ear is due to ear mites you need to clean the thick accumulated ear wax. You can do so using 0.1% ivermectin, which kills the mites.  The water retained in your dogâs ears after swimming or bathing can be a source of bacteria and yeast infections.
And treatment is simple. Most yeast infections are caused by a type of yeast called Candida albicans. A healthy vagina has many bacteria and a small number of yeast cells. The most common bacteria, Lactobacillus acidophilus, help keep other organisms-like the yeast-under control.
Overview. According to the National Institute of Health, a yeast infection, also known as candida albicans, stems from a natural fungus found inside the body. When the body is out of balance from fatigue or stress, the yeast can grow abnormally. An excess amount of glucose in the body can also cause a yeast infection.