Causes of the Black Death (4) Effects of the Black Death (6) Well-tended fields were neglected and overgrown. Doctors wore beaks with flowers to prevent smelling bad odors. People lived in close proximity as people moved to towns Wages increased due to a labor shortage. Lack of sanitation and hygiene Trade with Asia via the Silk Road People began to turn to science and less to church for answers. Rats carrying infected fleas Jews were blamed because rumor was they weren’t getting sick. Nearly half to 2/3s the population died across Europe.