But at least this would be "healthy smoke" from burning fuel, not the "nasty smoke" from burning plastics... And the soot will most probably be caught by the filters. But nothing I would like to try personally
Maybe somebody at Boeing has already had the same smart idea, and the procedures for takeoff are accordingly selected? You probably don´t want to have the electric load during takeoff run either. Just like with packless takeoffs on conventional aircraft.
It would be great to learn more.