Smell has a great impact on humans. If scent has an effect on humans, what effect does it have on other animals? In some cases, female mice become pregnant and miscarriage if they smell the urine of a male different from the mating partner within a week. The smell of any male urine does not result in a miscarriage. Miscarriage has a stronger effect on miscarriage than the smell of males, whose genes are significantly different from those of females. Significant differences in genes increase the potential for leaving offspring in a sense. Consanguineous marriages are genetically disadvantageous. Mice may also be imprinted with that instinct.
Of course, in the case of humans, even if you smell it, you will not have a miscarriage. However, a phenomenon close to that can be seen. It will be a research survey at a certain university. It seems that the male gene is related to the odor preference of young females to males. Female students say she likes the smell of male students who have different messengers. In addition, female students tended to dislike the smell of male students with genes similar to theirs. Smell may not be just a scent, but a substance that is deeply involved in life.
Regarding the reproduction of scent, research and development and application of technology are progressing. It seems that hands-on attractions where you can feel the wind and smell according to the image are now commonplace. It was found that the memory of the odor was related to the part close to the hippocampus. Connecting and remembering odors and delicious experiences is a function of the brain called associative memory. It seems that the development of sensors that accurately measure odors is also appearing one after another. We have developed a device that generates a constant frequency when a substance that emits an odor is adsorbed on the sensor. We measured the change in frequency that occurs here. It seems that the mechanism is to convert the odor into an electric signal and analyze this signal by machine learning. If you accumulate electrical signals as data and use it as machine learning teacher data, you can freely reproduce the odor. If the scent becomes freely available, it may be possible to raise the feelings of love. If it leads to the solution of the problem of declining birthrate, it will be a Nobel Prize-class invention.