Patients feel inconvenienced by “when I open the bowl, I smell the stench of meat and fish, so I can’t eat it” “I can’t distinguish the smell and taste, so it becomes difficult to cook”, etc. 2.Causes Side effects of chemotherapy drugs and radiotherapy: Odor is produced by odor substances attached to the olfactory cells of the nasal mucosa and transmitted to the brain by the olfactory nerve. The odor is produced by the odorant substances attached to the olfactory cells of the nasal mucosa and transmitted to the brain via the olfactory nerve. Chemotherapeutic agents (alkylating agents or antimetabolites) or head and neck radiotherapy affect the regeneration of olfactory cells or olfactory nerve conduction, resulting in loss of smell, olfactory sensitivity, olfactory variation, etc. There is no method to prevent or treat olfactory changes, you can only brainstorm in your life while waiting for the natural recovery of smell. 3. Life care 1) Avoid foods that tend to make people feel bitter Freshly cooked rice or warm foods such as steamed rice, grilled fish and boiled rice may give off an unpleasant odor, thus making people lose all appetite. Please cool down a little, open the bowl, and let the heat and smell dissipate before serving. 2) Food that is easy to accept… Cold noodles, sandwiches and other foods that are cooler and have less odor are easy to eat. 3）.When feeling the loss of smell… Try using herbs and other seasonings to increase the smell. Tone it down a bit, add some spices, use your brain and try it.