Hello! I have the exact same problem, although I do have some crusting and itching once in a while in the same place behind my right ear. What I do is when I shower in the morning, I take a pair of rough bath gloves, soap them up, and gently scrape away the dead skin.
When they are absorbed, they can be released in sweat through skin. Foods like yogurt, onions, garlic, red meat, cabbage, spices like coriander, and asparagus may result in increased body odor when consumed in large amounts. When you have a diet rich in proteins, you may have vinegar like smell on sweat.
Foot odor is a type of body odor that can affect the feet of humans and is generally considered to be an unpleasant smell. The medical term for smelly feet is bromodosis. Sweat itself is odorless, but it creates an environment where bacteria can grow and produce bad smelling substances. Feet may begin to smell when bacteria on the skin breaks down the sweat as it comes from the pores, resulting in a cheesy smell as the sweat decomposes.