Face coverings, physical distancing, and risk
This is an excellent infographic summarizing your risk when exposed to someone with COVID depending on whether or not you or they wear a face covering and how far apart you are. This is also impacted by other factors, such as how contagious they are and wind/airflow, but it captures the critical elements very well. Remember that many people with COVID don’t have symptoms while they are contagious.
I’d also like to note that people are consistently underestimating how far 6 feet really is. Try measuring it out at home and see how it feels!