I used to believe that when people smoked they must be blowing on then end, which was why it glowed red. Someone even gave me a pipe at some point and I tried blowing into that. I couldn't work out why anyone bothered it didn't seem to do anything.
A childhood belief about smoking

others believed things like this
- i used to belive that if you talked into a bubble while blowing into it it would say what you said before— austin franck
- i used to believe that if i looked at trees, the wind would start blowing. Anon
- I used to watch the clouds blowing across the sky and think I was seeing evidence of the earth's rotation.— Dave T
- I used to believe I could control the weather by singing rain rain go away or blowing the clouds away.— Shannon
- When I was little I thought people smoked cigerates to keep warm.Anon
- When I was young I thought people smoked to stay warm.— Phil Stam