Why Do Some People Have a Sixth Sense for Smells?

Some people can sniff out smells like a detective, even if the smell is tiny or far away. It’s because they have more of something called olfactory receptors in their nose, which are like little sensors that help them catch scents easily. Imagine your nose has a bunch of tiny detectives who are really good at finding clues, while other people's noses have fewer or less clever detectives.