Loss of smell, emotional detachment and other cognitive disorders among COVID-19 survivors has in recent weeks become an urgent medical issue. Some patients experience psychotic breaks. Others report strange neurological symptoms—tremors, extreme fatigue, phantom smells, dizziness and bouts of profound confusion, a condition known as “brain fog.” In one early study of more than 200 patients in Wuhan, neurological complications were identified in 36 percent of all cases and in 45 percent of severe cases. Another study in France in the New England Journal of Medicine reported neurological symptoms in 67 percent of patients.
