Once I learned that plants "breathed" carbon dioxide and "exhaled" oxygen, which is the opposite of what us humans do, I remember sitting in front of one of our house plants for hours trying to time my breathing to be opposite of what I thought the plant was breathing, so we would just be helping each other out.
A childhood belief about plants

others believed things like this
- Before I went to a planetarium for the first time, I thought it was just a room full of plants. Anon
- I thought plants only grew when people were not looking at them.Anon
- that song that goes *bring me a higher love*
i thought it said *breathing in iron lung*— oi - I used to think heirloom plants grew antiques— Honorary intern Hector
- I used to believe that when you fart, your tummy was breathing!— Nicholas Orsmond
- I used to believe that when people died, they turned brown just like plants do when THEY die.— Joey Schwartzman