Sentence:  USAmericans just couldn't bring themselves to order "<WSD>gassy</WSD>" drinks. But once the buzz changed from "<WSD>gassy</WSD>" to "sparkling," the biz hit the jackpot. Now even Coke wants to be known for not for selling "carbonated beverages," but "sparkling beverages." 
Meaning of the word marked with <WSD> tags:  Of a beverage: containing dissolved gas (usually carbon dioxide); fizzy.