Have you come across any room or a house with some plants or other greenery inside? Well, I have been to a hotel today and its interiors included this component. The room had a small partition at its center and the top of it was made convenient for the arrangement of plants. The plants were kind of miniature or bonsai ones. By adding this to the interiors, beauty was a plus, but something else matters! The carbon-di-oxide released by those plants. Plants release oxygen only when they are exposed to sun light. All the other times, they are also going to be normal living things that take in oxygen and leave out carbon-di-oxide. This is the reason why we are not suggested to be near trees at night. So, we are just adding up some more temperature and pollution to our room for some beauty.
I have seen some houses with rooms having a small lawn at the center. But, it was OK as most of them were in the presence of sun light by the arrangement of transparency to the ceiling.
If you are planning for a lawn inside your house or already have one, it adds to your responsibility to take care of the above thing. Else, it might be a health negotiator of the entire residents of the house. You need not compromise on the beauty of the house, but a little care is obligatory. So, check it out in your home now!