Outdoor dining in Bonn, Germany. Indoor dining is riskier than outdoor meals, experts say. Outdoor air can disrupt viral particles that have been expelled. Andreas Rentz/Getty Images hide caption toggle caption Andreas Rentz/Getty Images Goats and Soda Coronavirus FAQ: What's The Deal With The '15 Minute Rule'? October 9, 2020 The conventional wisdom is that it takes 15 minutes of close contact to a contagious person to put you at risk. But even a short exposure could prove problematic.