If he really thinks he can win the election, he's living in 'cloud-cuckoo-land'. [=he's crazy or foolish]
The scandal 'cast a cloud' over his presidency. [=people thought the President did something wrong]
The company remains 'under a cloud of suspicion'. [=people believe the company did something wrong]
(..) - Was he with anyone? - Yes. And there she is! Hey! Come back here! Forget it Jake. It's cloud talk. Sadness. - I only make everything worse. - Wait. Sadness, we got to get you back to... (..)2015 Inside Out
(..) I won first prize. - Me too! - Oh. Participation award. Wait, is that? Is that a? Look. It's Cloud Town. That's my favorite. Hoo-hoo-hoo. - Oh, it's so soft. - Oh oh oh. Let me try. Hey! (..)2015 Inside Out