Everyone has a characteristic smell

There are many reasons to believe that we all have a unique smell. Dogs, pets or police dogs, can identify each person with their slightly smelly odor. And the bond between mother and baby is also tightened with body odor.

Now a new study by Dustin Penn at the Institute of Etiquette in Vienna, Austria, has provided strong evidence to support the theory that based on odor, can distinguish you from others - just like mold face.

The researchers also found that these smells are classified into two groups depending on gender - men have more of these compounds, while women have more compounds.

Researchers looked at the smell of armpits, urine and saliva in 197 adults. Each person was sampled 5 times within 10 weeks. The researchers extracted thousands of volatile chemicals from samples - compounds that easily produce odors - and identified them with chromatography and spectrometry.

The team found that there are more volatile chemicals in sweat than urine or saliva. This is because humans distinguish each other with body odor rather than marking the territory as other animals do.

The body odor of each person changes over time, but the researchers found nearly 400 compounds that are constantly maintained in sweat at different times - such as compounds that are not affected by things. eat. Comparing the presence and absence of these 400 compounds between any two people can clearly distinguish one person from another, including those who live together or have close relatives.

But researchers still don't know if everyone on the planet has its own smell like fingerprints. They need more data to identify the smell profile of each individual who provides reliable biometric information.