My mother used to tell me not to chew on cough drops (probably to keep me from eating them like candy). Because of this, I came to the conclusion that they were poisonous, and biting or otherwise breaking them would release the poison. They were safe as long as they were sucked on until they either became so small as to be swallowed, or completely dissolved. I believed this until I was probably in my teens, when I accidentally bit into one and didn't die.
A childhood belief about dangerous food

others believed things like this
- I believed that wind was caused because the trees moved. I was completely sure my conclusion was correct.— Glenr
- I used to think if a tornado sucked up a poisonous mushroom, it would die.— Will
- I used to think that oil drops on wet road were rainbows drops that have fallen to earth Anon
- my mother told me if i ever swallowed chewing gum i'd turn into a pig, i believed this for many years.— stuart hayward
- My older sister told me squirrels were poisonous, and I believed her until I was 9.— Jenni
- i believed that carrots with milk was a deadly poison until i was 11.— Jennifer