In a world perfumed by freshly popped popcorn and exhaust fumes, where sea breezes can mingle with the scents of sweet flowers or wet paint, new research shows that humans are capable of discriminating at least one trillion different odors. Howard Hughes Medical Institute (HHMI) scientists determined that our sense of smell is prepared to recognize this vast olfactory palette after testing individuals’ ability to recognize differences between complex odors mixed in the laboratory.
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