“What the World Health Organization [WHO] and the CDC [The Centers for Disease Control and Prevention] have reaffirmed in the last few days is that they do not recommend the general public wear masks.” –  – Surgeon General, March 31st, 2020

There is no evidence that wearing a mask will prevent you from getting the Corona Virus.  The only evidence available shows it can help slow down the spread.  Only sick people should be required to wear a mask, as is common place in a hospital setting.  A temperature check like at some of the cannabis dispensaries is a more reasonable approach than mask requirements.