With combustion at temperatures near 200c and higher, it seems that some byproducts include benzene, toluene and naphthalene.
I absolutely despise putting concentrates in a blunt or on a joint. To me, the dab laced cigar tastes like death. What a waste of concentrate too! Is there anything data suggesting that levels of these carcinogens and byproducts are amplified when smoking a concentrate laced joint?