Smells are a way of sensing what's around us. It can help us detect danger by being able to pinpoint bad smells, such as rotten food and smoke. It can also be used to make you spend more money in a marketing strategy called "smell advertising". This is when companies mimic certain smells to try to get you to buy certain things. People aren't born with "super smell", or an ability to detect certain smells in a mixture of scents. Some people, like wine testers who have trained themselves to discern smells, can still only recognize 5-6 smells maximum in one mixture.
https://www.houseofwellness.com.au/health/news/5-smell-facts
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