ANSWERS: 2
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When you sniff too many scents or flavors at once, you soon won't be able to tell the differences as well anymore. Sniffing the coffee beans is supposed to neutralize your nose so to speak, so you can smell the true scents again.
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Exactly what pinkheavens said. It's sole purpose is to neutralize your olfactory senses. It like people who taste test ice cream for a living, they sip water to cleanse their palette for the next tasting.
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