日本語 
嗅覚（臭覚）消失、無嗅覚
英語での表現＆単語の場合は品詞
anosmia
名詞
名詞
英語例文＆出典（必要と思われる場合、可能ならば日本語の対訳をつけていただけると便利かと思います）
Anosmia, the loss of sense of smell, and ageusia, an accompanying diminished sense of taste, have emerged as peculiar telltale signs of Covid-19, the disease caused by the coronavirus, and possible markers of infection.
https://www.nytimes.com/2020/03/22/health/coronavi...
https://www.nytimes.com/2020/03/22/health/coronavi...