Be under a cloud is not trusted and suspected; Be disliked and unpopular
The cabinet minister left office under a cloud after a fraud scandal.
The cabinet minister resigned on suspicion of fraud scandal.
Ever since that leak of private emails, everything the CEO has done has been under a cloud.
Everything the CEO has done has been trusted since the private email was leaked.
As far as I’m concerned, the victim’s husband is under a cloud of suspicion until we interrogate him.
As far as I’m concerned, the victim’s husband is a suspect until we interrogate him.
Someone stole some money at work, and now everyone is under a cloud of suspicion. Even the manager is under a cloud.
Someone stole some money at work, and now everyone is suspected, even the manager is not trusted.