combustion cigarettes Lit By Stock Photo 2588140145 Factors Affecting Tobacco Combustion in
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The bottom of the carton is marked C-14-2

If you still smell smoke, repeat the soak + wash before using dryer heat
doi: 10.1111/jgh.15561 286 JiSDaiMYHuangYRenXCJiangMLQiaoJPet al

I particularly like what Ron Padgett has done with that