Silent Killers: 6 Things That Need a Little Extra Warning

Many dangerous chemicals have no smell or taste, while electric cars are so quiet they can sneak up on cyclists and pedestrians.




While it's good for regulating your car's radiator it can be deadly for animals and humans, so much so that most states regulate its disposal. The main ingredient in most antifreeze brands, ethylene glycol, has a sweet taste that's inviting to unsuspecting kids, pets, and wildlife who don't know better than to drink it. However, consuming ethylene glycol can cause severe heart and kidney damage and even death. Because of this, manufacturers across the U.S. have agreed to add a bittering agent such as denatonium to antifreeze to make it unpalatable.