APR 16, 2015 09:51 AM PDT

Wake up and smell the joy

Scientists believe that humans can detect each others emotions through their scentWhy happiness is infectious: you can actually smell joy.

Scientists at Utrecht University in the Netherlands found that odours produced by our bodies can communicate happiness to others.

It is said that happiness is contagious and now scientists believe they may know why.

For the first time researchers have found that humans can pick up whether a person is feeling joyful through their smell.

They found that the odours produced by our bodies can communicate our happiness to others - a phenomenon known as chemosignalling. Chemosignals act as a medium through which people can become 'emotionally synchronised', outside of their conscious awareness.

Although chemosignalling had previously been shown to convey fear and disgust, little was known about how it related to positive emotions, the researchers from Utrecht University in the Netherlands said.

For their study, they collected the sweat of 'sender' participants in happy, fearful and neutral states using pads placed under their armpits while they watched different film clips.

These pads were cut up, put into jars, and presented to a group of 'receivers' to sniff, in a random order.

While they sniffed, they were hooked up to an electromyograph, which measured subtle differences in the activity of their facial muscles as a function of the emotion they were experiencing, induced by the sweat.

"Exposure to sweat from happy senders elicited a happier facial expression than did sweat from fearful or neutral senders," the researchers wrote in the journal Psychological Science.

"Our findings suggest that not only a negative state, but also a positive state (happiness) can be transferred by means of odours."

The researchers said: "Happiness benefits the individual on multiple levels, as it restores the damaging impact of negative emotions on the cardiovascular, neuroendocrine, and immune systems, and broadens attention to inspire creative ideas.

"Humans are a social species with the capacity to share these positive effects, using not only modalities such as vision, hearing, and touch, but also - as this exploratory study indicates - the sense of smell."

Earlier this month scientist discovered a chemical compound which can trigger the areas of the brain responsible for releasing sex hormones in the brains of women.

Although it has long been debated whether humans can actually communicate via pheromones - the chemical signals secreted by animals to help find a mate - researchers have found that scent of Hedione generates ‘sex-specific activation patterns' in the nasal tissue which links to the brain.

It is the first time that a scent has been known to activate the pheromone receptor VN1R in humans.

(Source: Sarah Knapton for telegraph.co.uk
About the Author
You May Also Like
SEP 20, 2018
Neuroscience
SEP 20, 2018
Macaques Explain The Neuroscience of Envy
Believe it or not, there are neurological underpinnings that determine how we perceive our environment and often our perception of others. A publication in...
SEP 24, 2018
Videos
SEP 24, 2018
The Science of Being Transgender
Gender identity is an issue that some have trouble understanding. It’s not always about male or female, because gender can encompass more than those...
OCT 04, 2018
Neuroscience
OCT 04, 2018
Breast Milk is Brain Food for Preemies
A due date for a baby represents great hope to parents and families. Any due date is an educated guess, and some babies arrive a little early or a little l...
OCT 18, 2018
Cell & Molecular Biology
OCT 18, 2018
An Unexpected Role for Astrocytes
The brain starts out as a dynamic organ that is capable of many changes. That flexibility allows us to learn, adapt and grow....
NOV 12, 2018
Neuroscience
NOV 12, 2018
Role Of Choroid Plexus Protein Klotho In Aging
Inflammaging, describes the increase in an inflammatory alteration in the brain, due to aging and predicts the morbidity and mortality in older humans....
NOV 14, 2018
Immunology
NOV 14, 2018
Stress in Youth Can Mean Depression as an Adult
A research team investigates early life stress and its relation to adult depression and anxiety...
Loading Comments...