Olfactory disorders have so far played a subordinate role in pediatric care, although children can also be affected. Due to a lack of awareness, the diagnosis can often only be made after numerous visits to the doctor, although it can significantly impact the quality of life. Olfactory disorders in adults are usually acquired, while congenital causes dominate in children. To date, there are no specific recommendations for diagnosis in children. This article deals with the prevalence, causes, and diagnostic approaches of olfactory disorders in pediatrics. A structured diagnostic approach is fundamental, including a medical history and psychophysical olfactory tests, supplemented by specific examinations depending on the suspected diagnosis. Therapeutic approaches are limited, with a focus on counseling and olfactory training.