There's something we haven't thought of.
They used some sort of sugar for the charcoal, and some sort of salt to speed it up.
I'll say it again. The charcoal in real BP is not there to make smoke. It's just an after effect. Just like the charcoal is in T7 to serve another purpose than making smoke.
Look at the white crusty residue that T7 leaves. Ever burn sugar?
btw You aren't going to see all the ingredients listed. They just say secret ingredients. Otherwise, everybody would just copy the formula.
Gluconic acid?