the items are cooled or reheated improperly
For my experience it felt great but when it went away it felt like pain
Your heart or lungs may not be strong enough for surgery, your body might not be able to tolerate anesthesia, and the surgery may do harm to your body instead of it doing something good.
They don't follow the traditional ways so people don't always think that they can work and people aren't always the best with things that aren't very familiar hope this helps
Because three-forth of sense of taste come from sense of smell.(Unfortunately, i don't know about voice)