Close your eyes. What does your brain process when your eyes can’t see anything? Sound, touch, smell, taste are the remaining four powerful senses that humans possess. Each one of them adds a new dimension to what you perceive. Electric signals are sent by special sensory glands using which the brain decodes various messages for you. Stamps generally are visually appealing and activate sensors related to human sight. But there are many scented stamps around the world which also activate sensors related to smell. Let’s take a look at the four scented stamps of India that have been released by India Post Till date.