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Every time you inhale through your nose, olfactory receptors in your nasal passages enable your sense of smell to function. These receptors consist of protein complexes that help you detect chemicals floating in the air.

But research now shows that those types of receptors aren’t only found along your breathing passages. They’re all over the body in a wide variety of organs, and they influence what organs like your liver and intestines are doing.

Added to that, cancer cells possess their own collection of olfactory receptors that affect how they function. And those receptors, some researchers believe, might represent one of cancer’s vulnerabilities – and a key to destroying cancers with scents.

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Prime numbers are one of the most basic topics of study in the branch of mathematics called number theory.

Primes are numbers that can only be evenly divided by themselves and 1. For example, 7 is a prime number since I’m left with a remainder or a fractional component if I divide 7 by anything other than itself or 1. 6 is not a prime because I can divide 6 by 2 and get 3.