Carbon Dioxide (CO2)

Here's what the Competitive Enterprise Institute had to say about it in their ad campaign:

"Carbon Dioxide: they call it pollution; we call it life."

It was probably one of the most ridiculed ad campaigns of recent memory. Last word has to go to Rafael Baptista, who posted this comment on Gristmill.

"How about you make a campaign called 'Uric Acid. They call it urine. We call it lemonade.'"