Brisbane captain Jonathan Brown says he suspects unsubstantiated rumours being spread about fellow forward Brendan Fevola are designed to damage the AFL club.

Brown angrily denied there was any fact in a story spread in AFL circles that himself and Fevola fought at a recent team barbecue, after the former Carlton spearhead made inappropriate comments to a teammate's girlfriend.

"People always say where there's smoke there's fire," Brown told the Nine Network's AFL Footy Show.

"I can guarantee there's no fire and there's no smoke coming out of my place, because if I'd have whacked Fev or we'd punched on, it wouldn't have taken 10 days for it to get out, that's for sure.

"It's just an absolute crock of shit and we've obviously had enough of all of the stories.

"There's been plenty of those stories this year and obviously a bit's been connected with Fev.

"We know there's parties out there that are no doubt trying to bring the footy club down and bring Fev down."

Brown said it was pointless trying to track down the source of the story and there had been no issue between Fevola and the partner of any player.

"There's absolutely no problems, the rumours are just absolutely ridiculous, so I don't want to keep silent and keep adding fuel to the fire by not saying anything," Brown said.

"I've just come out now to knock this square on the head."

Brown and Fevola will both miss Thursday night's match against Carlton at Etihad Stadium through injury.

Brown said he does not expect to return to the side until at least the round 16 clash with Hawthorn.

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