Ever had a cold hijack your sense of smell? Some people's sense of smell gets a lot more twisted than that. Find out what the world is like when a banana smells like rotten meat, and roses smell like garbage.
Some people have no sense of smell whatsoever, and they're not a happy lot. (Most famously, Stevie Wonder lost his sense of smell in a 1973 car accident.) But as bad as having no sense of smell is, nasal hallucinations are much, much worse.