▁this ▁by product . ▁ ▁It ▁is ▁possible ▁that ▁this ▁myth ▁origin ated ▁with ▁old - f ashion ed ▁st ov es ▁and ▁fire p laces . ▁These ▁" app li ances " ▁did ▁not ▁require ▁season ed ▁wood , ▁and ▁frequently ▁did ▁not ▁receive ▁it . ▁As ▁a ▁result , ▁they ▁often ▁experienced ▁very ▁low ▁fl ue ▁temper atures - ▁usually ▁in ▁fl ues ▁that ▁were ▁not ▁ins ulated ▁as ▁modern ▁fl ues ▁are . ▁The ▁combination ▁of ▁low ▁fire box ▁temper atures ▁due ▁to ▁high ▁mo ist ure ▁content ▁in ▁the ▁wood ▁and ▁low ▁fl ue ▁temper atures ▁due ▁to ▁lack ▁of ▁ins ulation ▁led ▁to ▁high ▁levels ▁of ▁cre os ote ▁accum ulation . ▁Burn ing ▁a ▁wood ▁that ▁em its ▁a ▁lot ▁of ▁spark s ▁( such ▁as ▁p ine ) ▁in ▁an ▁old - f ashion ed ▁fire place ▁or ▁st ove ▁will ▁lead ▁to ▁spark s ▁going ▁directly ▁into ▁the ▁fl ue , ▁which ▁can ▁lead ▁to ▁a ▁dangerous ▁chim ney ▁fire ▁if ▁the ▁fl ue ▁is ▁co ated ▁in ▁cre os ote . ▁ ▁Modern ▁st ov es ▁which ▁are ▁operated ▁properly ▁do ▁not ▁cause ▁this ▁high ▁level ▁of ▁cre os ote ▁accum ulation . ▁While ▁different ▁wood ▁species ▁do ▁contain ▁varying ▁levels ▁of ▁vol atile ▁organ ic ▁comp ounds , ▁the ▁difference ▁is ▁academic ▁to ▁the ▁wood ▁burn er . ▁All ▁woods ▁produce ▁cre os ote . ▁All ▁woods ▁will ▁cause ▁cre os ote ▁accum ulation ▁if ▁burn ed ▁impro per ly . ▁So -