They are seeing increased incidences where there are NO OTHER symptoms though, as well as with symptoms.
AAO-HNS: Anosmia, Hyposmia, and Dysgeusia Symptoms of Coronavirus Disease
Excerpt from article:
...Anosmia, hyposmia, and dysgeusia in the absence of other respiratory disease such as allergic rhinitis, acute rhinosinusitis, or chronic rhinosinusitis should alert physicians to the possibility of COVID-19 infection...
The link to the UK article is on the same page.
Excerpt from the UK paper:
...In addition, there have been a rapidly growing number of reports of a significant increase in the number of patients presenting with anosmia in the absence of other symptoms – this has been widely shared on medical discussion boards by surgeons from all regions managing a high incidence of cases...