If i were to meet someone with the bubonic plague, could i catch it?

Yes: Even if there is no touching between a patient with bubonic plague and a visitor, the patient's plague bacteria may have spread to his lungs. When the patient breathes out, sneezes, coughs, or talks, some aerosolized moisture droplets containing the bacteria can float in the air and be inhaled by the visitor. After a couple of days, the visitor may develop pneumonic plague and die a quick death.