"Can you believe that tears can taste different?"
Tears change because of a chemical reaction from emotions. There are different types of tears. "Emotional tears" come with sadness or joy and have different chemical characteristics.
On the other hand, "reflex tears" flow when something gets in the eye. They are a defense function and do not depend on emotions, but they can affect the total amount of tears. Also, "basal tears" are always secreted in small amounts to keep the eyes moist.
Scientific research does not have clear data about the change in the taste of tears, but it suggests that emotions may influence the chemical characteristics of tears. Knowing how emotions affect our body can help with self-understanding.