@js2454 the smell you get is most commonly from the solvents used with the batteries. Most solvents in Li-ion cells are odorless. The two that do smell, and have distinct odor, are dimethyl carbonate (DMC) and diethyl carbonate (DEC). DMC has an alcohol-like odor, while DEC has a weaker, milder ester-like odor (like nail polish). Neither are toxic in small enough doses. Your single battery will not do you or anybody else do any harm. You are safe :-)