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It’s not just about perfume or deodorant. Our bodies have a natural scent, and this scent carries important information about our genes. explains, “When you’re attracted to someone’s natural body odour, your nose is actually picking up on their MHC genes. These are special genes that help control your immune system.”

MHC stands for ‘major histocompatibility complex.’ These genes are like tiny superheroes, defending your body from germs and diseases. When two people with different MHC genes have children, those kids often have stronger immune systems and better disease resistance.

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A famous study from Switzerland proved this idea. Researchers asked women to smell T-shirts worn by different men and rate which scents they liked best. The women preferred the smell of men whose MHC genes were most different from their own. You can read about this study here.

Dr Pinto says, “If you love your partner’s natural scent, it’s not just chemistry and it’s genetics. Your body is telling you that your genes are a good match. This can mean healthier kids and a stronger family.”

When parents have different MHC genes, their children get a mix of both. This mix gives kids a better chance of fighting off diseases. It’s like giving them a bigger toolbox to stay healthy. Dr Pinto adds, “Nature wants the next generation to be strong. That’s why our noses are so good at picking up these signals even if we don’t realise it.”

It might sound funny, but paying attention to your partner’s natural scent could be a smart move. If you find their smell pleasant, it’s a good sign. If it bothers you, your bodies might not be the best genetic match. Of course, relationships are about much more than smell. But science shows that our noses are doing some important work behind the scenes.

Smell isn’t the only strange thing that bonds couples. Some people fall in love over a shared taste in food, a favourite movie, or even a silly joke. But when it comes to health, your nose could be your best matchmaker.

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Love can be mysterious, and sometimes, it’s our senses that lead the way. Smelling your partner’s armpits might not sound romantic, but it could be a sign that you’re a great genetic match. Trust your instincts and your nose. It might just help you choose a partner who gives your future kids the best shot at good health. So, next time you find yourself drawn to your partner’s scent, remember: your nose knows best!