What is the scientific truth of the rural proverb "Flowers bloom in the house, but people are not prosperous"?

When placing flowers indoors, if the doors and windows are closed at night, it will rob people of indoor oxygen in order to complete breathing, which will have an impact on people's health. We all know that plants do photosynthesis and respiration every day, and plants with chlorophyll in their leaves also do photosynthesis during the day, absorbing carbon dioxide and releasing oxygen. But at night, due to the lack of light, plants have to breathe, absorb oxygen and release carbon dioxide.

If plants breathe in a ventilated room, it won't cause much impact, because indoor and outdoor air is circulating, but when the weather is cold, people will close doors and windows, indoor and outdoor air can't circulate, and the oxygen content is limited, which means that plants and humans have to grab oxygen to breathe, forming an oxygen competition mechanism, which will have some impact on human health in the long run.

Moreover, some plants will produce fragrance when they bloom, attracting many reptiles or flying insects to come for food and spread pollen. If you grow flowers, if you are accidentally bitten by insects, you may have itchy wounds and other symptoms. In addition, some flowers will release some smells when they open. Some people think that these smells are irritating and will produce allergic reactions, which is one of the reasons for "flowers are rich".

Another explanation is that "there are flowers in the house, and flowers are flourishing, but people are not prosperous." Flowers represent women. If the women in this family are strong and the pillars of the family, then the relative men will be weak.