What to Do if You Miss A Few Words of Megillah

It happens to the best of us—even if you're super focused, a rogue grager or a poorly-timed cough can mean missing a few words of the megillah reading. So what are the halachot on how to proceed? For more with Rabbi Elefant, Watch OU & You: https://www.kosher.com/shows/ou-you-25