Smelly space clouds
Sometimes things do really live up to their names. The planet Uranus sets schoolboys sniggering all over the English-speaking world, and has made it into famous songs and jokes for years. It’s already funny enough, it didn’t really need any more ammunition.
There is more, however. The clouds in the upper atmosphere of the planet Uranus, do actually smell like terrible farts. They are made of hydrogen-sulfide ice and give off a smell just like rotten eggs. They are beautiful, but you wouldn’t want to go anywhere near them without a gas mask, even if you could breathe on Uranus.