Do you still use Deo/Scent?

Hidden power of scent talks about how important our body odor is. Some extracts...

Although humans probably do not ordinarily use smell to navigate toward the nearest source of chocolate, we do seem to use odors—in most cases, subconsciously—to evaluate potential mates. Each of us has a unique scent: milky exudates of various glands, including the apocrine glands, which are located around the nipples, genitals and armpits, contain roughly 200 chemicals. The ratio of chemicals, which are metabolized into an aromatic brew by skin-dwelling bacteria, varies from person to person. Men and women, for example, have distinct odors governed by different ratios of sex hormones.

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One trait that people may be subconsciously evaluating through scent is immune system status. Some studies suggest that variations in the major histocompatibility complex (MHC)—a gene region coding for cell-surface proteins that help our immune system distinguish our own cells from those of invaders—can influence body odor. In a now classic 1995 experiment biologist Claus Wedekind of the University of Lausanne in Switzerland and his colleagues demonstrated that women can determine the status of a man’s immune system by sniffing his body odor. When women rated the odors of T-shirts men had slept in for two nights, they consistently preferred the scents of the men whose MHC genes differed significantly from their own, the researchers found. (Men could also differentiate MHC genes by smell.) This tendency may be adaptive: a mixing of divergent MHC genes through mating may lead to a more robust immune system in the resulting children than would occur from the mixing of similar MHC genes.

May be someone should send these research details to companies that make ads like these.