The answer is the Bartholin's glands
Try chewing some gum, of your choice,
don't use mouthwash for a bit (the alcohol can make your mouth drier)
reduce your caffeine intake, stay away from caffeinated drinks like coffee, and even soda.
I think it would be E because it is unsafe to have your contact information public
I think it would be a because theirs no one around to see you not wearing one.<span />