Why do we like our fart?

Alright guys, it's time to talk about farts.
There's no ignoring them - the human race
produces 70 billion farts every single day, and
around 10 of them are yours. But why doesn't
your gas seem half as smelly as everyone
else's? The latest episode of AsapSCIENCE
explains the science of farts, so we don't have to.
In blind smell tests, scientists have confirmed
that we truly do find the smell of our own
farts more appealing than the farts of others.
But it’s not because we’re all huge creeps.
As humans, we're more likely to prefer
something that’s familiar to us - whether it’s
a song, an old blanket, or a smell - than
something that isn't. And because the
bacterial population that’s responsible for
producing our various smells is entirely
unique from every other fart-producing
bacterial population, our farts truly have a
one-of-a-kind brand that our noses can
differentiate.
So it makes sense that we’re not typically
bothered by our own odours, but why is it so
difficult to be around other people’s? “From
an evolutionary perspective, a reaction of
disgust to other people’s odour is likely our
brain’s attempt to prevent us from doing harm
to our own bodies,” says the latest episode of
AsapSCIENCE, “specifically, interacting with
sources of disease.” Think about it - most
sources of bad odour aren’t particularly good
for you, whether it’s excrement, rotting food,
vomit, or milk past its use-by date. And the
higher the risk that you could contract a
disease from the source, the more intense
your natural disgust levels with be.
But wait, does that mean farts can spread
disease? The answer, unfortunately, is yes.
Watch the latest episode of
AsapSCIENCE above to find out how.
Source: AsapSCIENCE