Smell with Traction Control

[Groves8]

Hey, I have about 5000km on my TRD Sports 6M. I noticed when traction control kicks in, I get a different smell throughout the cabin, I have smelt it few times, but it seems I smell it most if I hit the accelerator hard for a second. Can anyone tell me what this could be and if it's a concern, is it just something getting broken in? Seems weird since I am at 5000km but I also have never had a truck before. I can't describe the scent

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[soupy1234]

Does it smell like hot brakes? Traction control works by applying the brakes to the wheel that is slipping in order to transfer power to the other wheel on the same axle.