Gold Coast Titans have sacked former captain Kevin Proctor after the 33-year-old posted a video of himself appearing to vape at half-time during his side's NRL loss to Canterbury-Bankstown Bulldogs.

The Queensland outfit were downed 36-26 at CommBank Stadium by the Bulldogs on Sunday to keep them marooned joint-bottom of the ladder with Wests Tigers after a miserable season.

Ex-skipper Proctor - who was a non-playing member of the matchday squad as 19th man - appeared to be seen inhaling from a vape pen during the interval in a since-deleted video posted to Instagram, with the Titans trailing 26-10.

Both vaping and the use of mobile phones in dressing rooms are a breach of stadium and sport integrity rules, and Gold Coast have now opted to dismiss the second-rower out of hand, with a $15,000 fine to boot.

Proctor, a former Kiwi Test veteran and an NRL Premiership winner in 2012 with Melbourne, was a flagship purchase for the Titans when he arrived for the 2017, and held the armband until the end of last term.

His dismissal may spell the end of his first-grade career in Australia, with several sides already juggling tight salary cap restrictions.

Melbourne Storm great Cameron Smith will not play for Gold Coast Titans in the 2021 NRL season, according to Mal Meninga.

It remains to seen what the future holds for Smith, who is yet to publicly confirm his plans after guiding the Storm to premiership last year.

Out of contract following 18 years in Melbourne, Smith reportedly relocated to Queensland at the end of the season and the 37-year-old has been linked with the Titans as well as Brisbane Broncos.

With speculation mounting over Smith's status, his former State of Origin and Australia head coach Meninga – now head of performance and culture with the Titans – insisted the ex-Kangaroos skipper will not be moving to Gold Coast.

"I've not talked to Cameron. He's the hardest bloke to get hold of in the world," said Meninga.

"I've not spoken to him – not has anyone from the club.

"Everyone assumes he's coming to the Titans. I haven't talked to him, he's not on the radar.

"You should ask Kevvie [Broncos head coach Kevin Walters] about Cameron so I don't have to answer these questions anymore."

Broncos coach Walters could be an interested party were Smith to delay his retirement plans, but Meninga rubbished reports that emerged last week linking him with the Titans.

Meninga told the Courier Mail: "I don't have any idea what Cam is doing. I don't know if he's retiring.

"I'm in the dark like everyone else. But I know he won't be at the Titans."