The advice comes as the government faces growing criticism over a lack of testing for frontline staff.
Ismail Mohamed Abdulwahab is thought to be the youngest person to have died with the virus in the UK.
The artist, who's in lockdown in Normandy, shares 10 soothing paintings of the springtime.
The 19-year-old's symptoms were dismissed as just a cold, according to his family.
However, experts say a fever and a cough are still the main ones to look out for.