Chlorine

Next time you take a refreshing swim/dip in your local pool, be sure to thank/know that something inside it was a secondary biological weapon in WW2. Chlorine, the most abundant in luxury hotels is a small compound that is a gas. You may think that you put this in pools and then Pee in it and then just wait, so stupid. If you overdose chlorine, or get it in gas form you will die, and that is the cause why you die from it in WW2.
Category:Chemistry
Category:Science
Category:Unhealthy
Category:Death causes