Ключевые слова: atomic, atoms, chemical, chemistry, composition, compound, drawing, eggs, flat, formula, h2s, hydrogen, hydrosulfuric, hydrothionic, icon, line, molecular, molecule, poisonous, rotten, sewer, signaling molecule, skeletal, smell, stink, structure, sulfhydric, sulfide, sulfur, sulphide, sulphur, swamp, toxic, volcano,