If you're working in an office or eating in a restaurant, and someone 30 feet away exhales tiny particles of the coronavirus, those particles can drift and infect you. Picture cigarette smoke wafting across a room. Same thing. The precautions global and federal agencies are advising aren't good enough. Social distancing — keeping six feet away — and washing your hands won't protect you from this airborne virus. That isn't fear-mongering. It's science.