Why is it not recommended to sleep in a room with many flowers?

It is not recommended to sleep not only in a room with many flowers, but, in principle, a lot of plants. We know that plants release oxygen because they feed autotrophically and oxygen is released in addition to glucose during photosynthesis. But this happens only during the light phase, that is, during the day. The dark phase sets in at night. Plants no longer emit oxygen, but rather absorb it. They give off a lot of carbon dioxide. This is not good for us, as we do not have enough oxygen. Therefore, it is better not to put flowerpots with plants in bedrooms.