evidence: Snake plants, or Sansevieria laurentii, are well-known for their air-purifying qualities. They are said to be able to improve air quality by removing toxins such as formaldehyde, trichloroethylene, and benzene. According to some sources, including a widely circulated Facebook post, a NASA study concluded that 6-8 snake plants in a sealed room can produce enough oxygen for human survival. However, this claim has been disputed by NASA and other researchers, who state that the study focused on the plants' ability to reduce toxins, not generate oxygen for human survival in sealed spaces. While snake plants are excellent air purifiers, the idea that they can provide enough oxygen in a sealed room to sustain human life remains unsupported by the NASA study. [...] While the benefits of snake plants on sleep quality are well-documented, it is important to note that a widely circulated claim that "six to eight snake plants could produce enough oxygen to keep humans alive in a sealed room" has been deemed false. A NASA study in 1989 found that snake plants could remove certain toxins from small sealed spaces, but it did not conclude that they would provide enough oxygen to sustain human life.