The microbes that crawl all over us give us our unique scents. And research shows that not only do we prefer our own, but we tend to choose friends with a similar smell.

An astonishing amount of research has gone into the question of whether asparagus really makes your urine smell funny. Sci Show explains it all inside!

Did you know that dogs can tell when you're stressed out? But how do they know? Turns out they can smell it! Join Hank for a new episode of SciShow and learn all about it! Hosted by: Hank Green (he/him)

Hank goes over some of the more interesting ways that doctors can use to tell what might be wrong with you.

If you've ever associated a smell with old age, you weren't imagining it—it all has to do with the chemistry of our skin.

Farting is hilarious and gross and everyone is doing it so why can't we talk about the science of it?! Flatulence, passing gas, cutting the cheese, toots.... whatever you call it, it's natural and here's how it works.

Dogs are humanity’s go-to friend when it comes to super sniffers, but here are 6 other creatures that give puppers a run for their money.

Modern psychiatric drugs treat the chemistry of the whole brain, but neurobiologist David Anderson has a more nuanced view of how the brain functions. He shares new research that could lead to targeted psychiatric medications -- that...

Hank goes over some of the more interesting ways that doctors can use to tell what might be wrong with you.

In the quest to map the brain, many scientists have attempted the incredibly daunting task of recording the activity of each neuron. Gero Miesenboeck works backward -- manipulating specific neurons to figure out exactly what they do,...

So you went to a nice Italian restaurant for your dinner date and now your entire body reeks of garlic. What is this treachery?

Some perfumers can distinguish individual odors in a fragrance made of hundreds of scents; tea-experts have been known to sniff out the exact location of a particular tea; and the NYC Transit Authority once had a employee responsible...

Turns out stink bugs and cilantro have some things in common.

If you happen to be a frequenter of urinals, odds are you've seen one that has a little block at the bottom of it. But what does it do and why are you peeing on it?!

An adult human can distinguish up to 10,000 odors. You use your nose to figure out what to eat, what to buy and even when it's time to take a shower. But how do the molecules in the air get translated into smells in your brain? Rose...

If you've ever farted in the shower, you know that they smell REALLY bad in there, but why is that?

In this video Paul Andersen explains how chemical differs from physical change. In the laboratory macroscopic observations are used to infer changes at the particulate level. Evidence for chemical change include gas production, change...

Hank tackles another one of the internet's most-asked questions: What makes feet stink? And maybe more importantly, why do they sometimes smell like ... snack food?

Have you ever gone through your laundry and noticed unsightly yellow stains in all of your white shirts? If your sweat isn't yellow, what's causing this?

If you've spent any time trying to explode a pumpkin with rubber bands you know that they have a distinct smell to them when stretched, and you have physics to thank for that.

To the average tongue, the color "red" doesn't have a flavor or a smell. But color can affect how we perceive the world in so many ways - including how things taste and smell!

Most of us don't need more than one whiff to identify that generally unpleasant, characteristic smell we call body odor. But it's a surprisingly complex phenomenon, influenced by our genetic makeup, age, diet, and hygiene. So what is...

Howcast - Learn how to handle adolescent body odor from Jennifer Wider, M.D. in this Howcast video.

Howcast - Learn what to do when your water breaks from childbirth expert Elizabeth Mangum-Sarach in this Howcast video.