Fundamental insights into the mechanism of smell localization have now been gained by researchers. This marks an important step in unraveling the entire neural odor localization mechanism, which is highly valuable to the study of memory diseases such as Alzheimer's. The team used mice for the experiment, which are smell identification champions. Using a novel non-invasive technique based on infrared technology, they revealed that localizing odors is achieved by comparing information gathered from the left and right nostril.