My Mom got me a chemistry set in the 80s. I remember having watched a lot of Unsolved Mysteries and America's Most Wanted, so I knew what Cyanide could do, re: murdering people. I had a bottle of cyanide in my set.
I asked my Mom, hey, isn't this poisonous? What's it doing here? She kind of gave me the run around and told me not to worry about it and go play.