Ageusia, n.: inability to taste
Both are Greek in origin
I'd seen "anosmia" before, but not "ageusia"--and here's where I came across it:
"The 50-year-old man was admitted to an emergency room with a temperature of 99.9°F (37.7°C). He reported two days of vertical diplopia, perioral paresthesias, and gait instability. His neurologic examination showed intact cognitive function and language.
Five days earlier he developed a cough, malaise, headache, low back pain, fever, anosmia, and ageusia."
(And here, two bonus words for you, "diplopia" is double vision, and "paresthesia" is numbness and/or tingling)
(Source: Two Rare Neurologic Conditions Linked to COVID-19, from Medscape)