smell (olfactory) receptor - isometric view 3d

mucosa mucosal mucous nasal neurons nose sinus smell sniff flu antihistamine allergy anatomical steroid bulb cavity cell cilia cranial dust antybody epithelium odor olfactory otolaryngologist pharynx pheromone pollen receptor respiration respiratory rhinitis fibers flying immunotherapy goblet autoimmune head healthy inflamed medical nostrils histamine scent scheme cold symptom snot system