I once heard a long time ago that plants should not be kept in bedrooms because at night, in the dark, plants will release carbon dioxide and use up oxygen. Is this true?

Thank you fo your time. Cynthia

The amount is tiny and would only affect you if lived in a bubble like that movie. Don't worry! My bedrooms like a green house and I'm pretty much alive. At least enought to respond slowly on this key board. Fill your house with plants and enjoy.