New smell discovered – nasal equivalent of “white noise” sound

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In a recent study, scientists have discovered a new smell dubbed “olfactory white” because it’s the nasal equivalent of “white noise” (which sounds like a whooshing hum). Just as white noise is a mixture of many different sound frequencies and white light is a mixture of many different wavelengths, olfactory white is a mixture of…

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What causes that unique rainy smell after it rains?

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It’s that distinctive earthy, musky scent that occurs after a good rain, and it has a name unbefitting its pleasant smell – “petrichor”. The petrichor odor is distinctive (and difficult to duplicate) because there are several sources/causes for the smell, including the force of the rain striking the soil and storm winds stirring everything up.…

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