The threat of dᴇαth is revealed through smell to humans.

PUTRESCINE IS A CHEMICAL COMPOUND RELEASED WHEN A BODY DECAYS.

It also has a secondary function as a warning signal. People have both a conscious and subconscious reaction when they are exposed to this scent.

There were four different experiments conducted using putrescine, ammonia, and water to study people’s reaction.

One of the experiments included putrescine exposed at a site, people’s immediate response was to move away from the area.

This is the same response around fight-or-flight reaction.

When animals sense they are in real danger, there are only two responses: fight the threat or run away from it. The study revealed people react