Trinamool's national spokesperson Derek O'BRien tweeted,"She was in the room when the fire broke...She is safe."
In Malda for an election campaign, Banerjee had put up at a private hotel called Golden Park.
"The AC in her room got overheated and smoke started to come out. Luckily it was detected early and she was evacuated. She is safe now. Her room has been changed," said Krishnendu Narayan Chowdhury, state tourism minister.
The incident is said to have happened between 6 pm and 7pm.