When we talk about olfactory or smelling disorders, loss of smell usually comes to our minds. Depending on the severity, we may experience partial (also known as hyposmia) or complete (also known as anosmia) loss of smell. While both are usual symptoms of a sinus infection or common cold, people are more aware of anosmia as it has been one of the recognized symptoms of COVID-19. Yet, other studies also suggest that hyposmia may also be a good indicator of virus infection. However, in other instances, people may also experience two less-known kinds of smelling disorders: parosmia and phantosmia.