evidence: The claim: NASA study found six to eight snake plants can provide enough oxygen for humans to survive 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 – yikes! – you would be able to survive with just 6-8 plants in it," reads the article, which was published by the Canadian gardening company Shelmerdine. "NASA recommends 15 to 18 medium-to-large size plants for a 1,800 square-foot home for optimum air quality." [...] The NASA study referenced in the post didn't examine the oxygen production of snake plants, but rather the air-purifying capabilities of several houseplants, including the snake plant. It would be physically impossible for snake plants to produce enough oxygen to keep humans alive in such conditions, according to experts.