Swedish researchers have determined that human brains are actually able to tell when someone near us is ill. The researchers injected one group of volunteers with harmless bacteria and recorded their reactions. A second group was exposed to photos and smells of individuals from the first and second groups. The second group was less likely to want to socialize with the sick individuals from the first group. Researchers also discovered that the opposite happens when a loved one is sick. We are less likely to avoid loved ones when they are sick compared to a stranger who is sick.
Read more: Your Brain Can Detect Diseases Before They Break Out