no.
dont do it man.
charcoal briquettes are bade from only partially carbonized wood fiber along with the charcoal, it provides a more consistant heat and even burn pattern.
but its still got alot of resins and various compounds that arent good to breath.
if you run out of hookah charcoal.
burn a stick.
poke your fireplace, probly lots of charcoal there.
hell you can make it yourself by the ton if you want too.
i read somewhere ash trees make the best charcoal for gunpowder,
becuase of the size of the pores of the charcoal grains or something,
but this i know nothing about, im kinda accident prone, and i like having fingers.