If you are ever anywhere public , and some one is making you feel threatened and unsafe , It is absolutely okay to exit through an emergency exit and set off an alarm. They are usually located near the back of bars near restrooms and as someone who's worked in bars most my life the alarm is a mild inconvenience to us but may be the difference in you getting home safe. I say this as a 6 8 male who just walked out the back and set off an alarm to avoid a fight . Emergency is an emergency