evidence: Fact-check: Can a snake plant provide humans oxygen to live in a sealed room? [...] "According to NASA's Clean Air Study, the snake plant is so effective in producing oxygen that if you were locked in a sealed room with no airflow, you would be able to survive with just 6-8 plants in it. NASA recommends 15 to 18 medium to large size plants for 1,800-square-foot home for optimum air quality." [...] A Facebook post claims that according to a NASA study, six to eight snake plants could produce enough oxygen to keep humans alive in a room with no airflow.