Healthy home environment is vital for your personal health, and the plants contribute even more than you think to this statement. They are air purifies, so normally NASA did a research in this field.
The scientist selected the plants that had the effect in purification of benzene, formaldehyde, trichloroethylene, xylene, ammonia in the air. Those are the chemicals that are directly related with some of the negative health effects, such as headache, dizziness, eye irritation etc.
NASA recommends that you should have 1 plant per 10 square meters. The best plants are peace lily and florist’s chrysanthemum.