How far do corona virus germs fly through the air when someone is coughing? how long do they last? is it safe to be in the same room as a coughing person?

Covid 19: Try to avoid being around people who are sick or coughing. Social distancing recommendations for at least 6 feet. However, a vigorous sneeze or cough (without a mask) can reach 9 feet. Virus can remain in a closed space for 3 hours under lab conditions. See: https://www.cnn.com/videos/health/2020/04/10/sneeze-cough-animations-coronavirus-pandemic-eg-orig.cnn