Slowing motor and electric smoke coming from Magic Bullet blender?

I have a Magic Bullet blender at home and I have been using it for the past month or so everyday to make some smoothies. I always blend fruit (both frozen and fresh). I'm not sure if the contents that are blended are related, but I've noticed the blending seems to have slowed down lately. The motor runs noticeably slower and the machine doesn't vibrate as much as it used to.

Has anyone had this experience? In addition, the blender has some smelly gas coming from the bottom, where there is a vent for the motor. Does this mean the unit is already wearing out? I only started using this a month ago, and I'd be surprised that it's already breaking.

Does anyone know what the gas signifies, even in other similar kitchen appliances?