A couple of researchers have claimed that they can produce a mixture that can cancel the pungent smells, or olfactory white - equivalent to white noise and white light.
Brothers Kush and Lav Varshney said that they have created a mathematical model that predicts how humans perceive the smell of a particular substance based on its physical and chemical properties, by matching a database of compounds to another of perceived smells.
Theoretically, canceling smells with smells should work because human perception of smell is synthetic, not analytic. That means that when human brains encounter multiple odors, they don't perceive them as a weighted mix. So it's not like, "Oh hey, this is 50 percent dairy compounds, plus 48 percent mild squash, plus two percent tree bark." Instead, human brains mush everything together: Smells like pumpkin pie!
To cancel out a smell, they calculate which compounds provide the opposite ratings, giving a zero score across the board. Previous research has shown that an equal blend of around 30 compounds creates "white smell".
Read the full articles here:
White noise for your nose cancels pungent aromas at New Scientist, and
How To Make 'Noise-Cancelling Headphones" For Your Nose" at Popular Science
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