Alexander Fleming’s laboratory  

 Alexander Fleming’s discovery of Penicillin changed the world but maybe there is more to it. In an old journal, your team discovered that there might be secret message to Humanity to which he dedicated his research hidden inside of his private laboratory. This may be a major scientific discovery for mankind. You have found the laboratory; it has been kept intact. Look everywhere for clues, solve the puzzles and experiment with chemical reactions. You do not have much time, Mr Fleming was fearing scientific espionage and protected his private lab. You triggered a defence mechanism by entering the laboratory and released poisonous gas. You have only an hour before you faint. You must hurry. The message will be revealed through the chemical elements you will discover.