Ключевые слова: addict, addiction, addictive, alkaloid, atom, atomic, bad, black, cancer, carcinogenic, chemical, chemistry, cigar, cigarette, compound, danger, dependence, drug, filter, forbidden, formula, glyph, habit, health, icon, illustration, insecticide, medical, medicine, molecular, molecule, monochrome, narcotic, nicotin, nicotine, patch, poison, science, sign, skeletal, smoke, stimulant, stop, structure, symbol, therapy, tobacco, toxic, unhealthy,