how does the brain differentiate between bad smells and good smells?

Question

how does the brain differentiate between bad smells and good smells?

In: Biology

Answer 1

By expirience. There is no objective good or bad smell, there is smells that your brain links to the one time you have thrown up, so thats probably a bad smell amd if you smell something that you smelled when you had a good meal last time its probably a good smell.