You are expected to not disturb others during an event.
Megan is in the middle of a board meeting and starts feeling a bit sick.
Megan wants to go home to recover.
Megan slips out of the room and sends an apology email to her colleagues after she leaves.
Megan stands up and announces she is unwell to everyone else in the room and then leaves.
Megan's colleagues understand her situation and are sympathetic.
Megan develops a reputation for being rude and unprofessional at work.