When I was younger I used think when a jet in the sky had the white fuely smoke behind it it was because it dragged a cloud with it when it went through one.
A childhood belief about aeroplanes

others believed things like this
- I used to believe that smoke stacks that pumped out white smoke were cloud makers.— lizzie
- when i was young i thought god was a cloud, big white fluffy cloud floating around with 2 eyes and a smile. — kerrie
- I used to believe that the large building/skyscrapers that made smoke were "cloud machines"Anon
- I used to think the easer bunny was a blue and white cloud guy that hid eggs.— James the Great
- As a child I use to think that factory that billowed white smoke were making clouds.Anon
- when i was younger i believed that clouds were made from the smoke stacks — lisa