Pretty sure this is the plant she was talking about... *note*. It's the only plant with that name that makes sense being used for covid in this context.
Pseudognaphalium obtusifolium aka Gnaphalium obtusifolium and Pseudognaphalium saxicola, is a member of the family Asteraceae.
In herbal medicine it's most commonly called Rabbit Tobacco, life everlasting and sweet everlasting though the last two names come from native americans.
It's very good cough and cold medicine, great for asthma too.
https://www.homesteadingforum.org/threads/rabbit-tobacco.6841/
Note... this is why I always use the latin name, to avoid confusion. Especially when talking to a stranger. Use of common names only lead to mis-identification. There is only one latin name for a plant species but dozens of species might share a common name. In this case Gnaphalium obtusifolium and Pseudognaphalium saxicola are old latin names that were changed to Pseudognaphalium obtusifolium. Some older books might have the old latin names.
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