i never tried it but i heard some people who said they tried it and it worked well for them. as i said it is dangerous and it can burn you. sorta like how they say if you touch dry ice its so cold it burns, same basic concept on what your inhaling. its not as cold but it gets close to there and it can hurt. its iffy because of the extra co2 that would be in the air. your already getting tons from the coals so smoking with both is worse ofcourse.