I read on a tank forum somewhere that someone was using a mixture of WD-40 and something to create the smoke. That actually might be good for the inside? I don't know the capabilities of the various boards such as Clark and DBC3. I just was asking the question and believe that this act of smoke at destruction time would be beneficial/cool/neat.
One of the features of these tanks that is always mentioned is engine smoke. To create battle damage smoke would be an additional use of that smoke system.