"[The doctors] concluded that roughly 80% of the people who lost their sense of smell would test positive for the coronavirus, and that somewhere between 30% and 60% of those who had tested positive for the virus had also lost their sense of smell."
covid19? --> ~30-60% chance of loss of smell
loss of smell? --> ~80% chance of covid19 [in the data they collected]
covid19? --> ~30-60% chance of loss of smell
loss of smell? --> ~80% chance of covid19 [in the data they collected]