According to the NHS, common symptoms of COVID-19 are shortness of breath, a cough and a high temperature.
But after continuous reports of an unusual symptom cropping up, scientists have now confirmed what the strongest sign of COVID-19 really is.
Loss of sense of taste and smell has been identified as the best way to show if you have novel coronavirus reports the Daily Mirror.
Scientists at King's College London have analysed millions of people through their specialist app.
The Covid Symptom Tracker App has seen 1.8 million people log on to track their coronavirus symptoms.
59% percent of those who have tested positive for coronavirus have logged loss of taste and smell as a symptom.
The researchers say that a loss of taste and smell is being reported even more than fever.
Lead researcher Professor Tim Spector from King's College, said: "When combined with other symptoms, people with loss of smell and taste appear to be three times more likely to have contracted Covid-19 according to our data.
"And should therefore self-isolate for seven days to reduce the spread of the disease."
