The former Baggies striker, now plying his trade with Stoke City, revealed his disappointment at his treatment during his time at The Hawthorns, as well as offering support to Berahino.
Odemwingie was accused of trying to engineer a move to Queens Park Rangers during the latter stages of his West Brom career and believes his reputation has been tarnished by the allegation.
Furthermore, the 32-year-old believes England Under-21 international Berahino is being picked on by team-mates.
"I have been painted as the bad boy and the money grabber," he told the Daily Express.
"I am not. I would have accepted some of the blame for what happened if the club and the agents would have accepted some as well, but they would not.
"What Berahino is facing now, I faced, they are just picking on a young boy."
Berahino is in the midst of an uneasy truce in the West Brom dressing room after being punched by team-mate James Morrison, and Odemwingie recalls troubles of his own in the Baggies' camp.
"It was the week before the end of the season," said Odemwingie. "We lost four zero. There were mistakes from players like Olsson, Foster, they had a bad game.
"Already by then I wasn't part of the team, I was just waiting for the summer to leave.
"But in Norwich, I asked them: 'Guys, why don't you tell each other off? It is four zero. Why is it only a few people you always pick on? Why don't you say one word? Not even one word?'"
Odemwingie remembers being forced out of the West Brom changing room when they lost to Norwich City at Carrow Road and believes Berahino is an unfortunate victim, with reports suggesting the 20-year-old has been training alone.
"I was kicked out, getting changed in a dressing room no bigger than my toilet," he claimed.
"Now they are just picking on a young boy. There's people who shout in training, and why does no one say a word at the club?
"The best players, to me, were Shane Long and Gareth McAuley, neutral people, Billy Jones. They were just nice and respectful to everyone. But some are different to that."
Odemwingie returns to The Hawthorns with Stoke on the final day of the season and claims the unrest surrounding Berahino and manager Pepe Mel is "ridiculous".
"I don't like bullying, I don't like this seniority thing. In a football team, everybody is the same," he added.
"But now you hear the senior players are not happy with the new coach, Pepe Mel, that he might have got the sack after the Swansea game recently.
"All those things are ridiculous."