The American musician was forced to apologise after angering Flamengo fans at a workshop earlier this week
The musician attended a workshop in the Brazilian city earlier this week and was presented a Flamengo shirt on stage. Smith was initially jeered by the audience when he received the jersey, but was given applause when he pretended to wipe his backside with the shirt.
However, he has now stressed that he regrets his action after he was criticised for the incident by Flamengo supporters.
"I want to apologise for my inappropriate antics at the drum clinic," Smith said on his official Facebook page.
"My joke about team rivalries went too far. Clube de Regatas do Flamengo fans...I'm sorry."