Have a Stinky April Fool's Day

Here's a famous AND smelly April Fool's Day joke:

In 1965, BBC TV played an April Fool's Day joke on their viewers. The network aired an "interview" with a man who had invented a new technology called "Smellovision" that allowed viewers at home to experience aromas produced in the television studio. To demonstrate, the man chopped some onions and brewed a pot of coffee. Viewers called in to confirm that they had smelled the aromas that were "transmitted" through their television sets.