The corona virus appearantly does not like high temperature: High Temperature and High Humidity Reduce the Transmission of COVID-19 Also it seems that higher body temperatures helps the immune system to work better: Elevated body temperature helps certain types of immune cells to work better, evidence suggests
Should therefore someone who suspect they may have the corona virus or possibly another cold virus and do not experience fever try to elevate their body temperature slightly (say 0.5-1 degrees celsius) by dressing extra warm?
This is postulated here.
Does this sound plausible to you?