Hallucinations are mostly pathological. If a person experiences phantom odor several times, he should be examined in time in order to diagnose and treat his psychological disorder and prevent accidents under the influence of phantom odor. What tests should be done for phantom odor? Ear, nose, pharyngeal swab bacterial culture Bacteria in the ear, nose and pharynx all come from the outside world and are not pathogenic under normal circumstances. However, under normal circumstances, they are not pathogenic. However, when the body’s systemic or local resistance decreases and other external factors, infections can occur and lead to diseases. Therefore, bacterial culture of ear, nose and pharynx swabs can isolate pathogenic bacteria, which is helpful for the diagnosis of otitis media, rhinitis, sinusitis, diphtheria, suppurative tonsillitis, acute pharyngolaryngitis and so on. The specimen is taken by the doctor using a sterile cotton swab and the secretion from the patient’s lesion area is sent for examination. Nasal endoscopy Nasal endoscopy is a rigid endoscope with a well-lit cold light source, which is magnified by mirroring and can penetrate deep into the nasal cavity to clearly observe the anatomical structure from front to back, and nasal surgery is transformed from blind empirical operation to one that focuses on the protection of normal structure and physiological function. At present, the commonly used clinical endoscopes are 0°, 30° and 70°, with a diameter of 4.0mm and a length of 180mm, which have a large field of view and good brightness. Children can use 2.7mm diameter endoscopes. A cold light source and a light source lead should also be available. In order to do some simple operations, the following instruments should also be prepared 0 ° and 45 ° sieve sinus clamp, straight suction tube, curved suction tube, maxillary sinus trocar puncture needle, maxillary sinus biopsy forceps, pterygoid sinus biting forceps and so on. If there is a video recording system, it will help operation, teaching and data preservation. Nasal hairs should be clipped before the examination. Neurological examination is to determine whether there is damage to the nervous system and the location and degree of damage, that is, to solve the lesion “localization” diagnosis. The examination should be carried out in a certain order and in conjunction with the general physical examination. Usually, the cranial nerves are examined first, including their motor, sensory, reflex and vegetative functions; then the motor systems and reflexes of the upper and lower limbs are examined in turn, and finally the sensory and vegetative nervous systems are examined. The examination should also be focused on the history and initial observations, especially in the examination of critically ill and injured patients. In addition, cortical dysfunction, such as consciousness, aphasia, dysarthria, and anosognosia, also fall within the scope of the neurological examination.