Mysterious SIDS(Sudden Infant Death Syndrome)explanation...

"A fungus that commonly grows in bedding can interact with mattress chemicals to create poisonous gases. These heavier-than-air gases are concentrated in a thin layer on the baby’s mattress or are diffused away and dissipated into the surrounding atmosphere. If a baby breathes or absorbs a lethal dose of the gases, the central nervous system shuts down, stopping breathing and then heart function. These gases can fatally poison a baby, without waking the sleeping baby and without any struggle by the baby. A normal autopsy would not reveal any sign that the baby was poisoned.

This explanation is backed by a significant amount of evidence, but has been and continues to be completely ignored by SIDS organizations, the medical community, and the government – for a variety of reasons, including politics, financial liability, and vested interests. Publication of these findings continues to be denied and suppressed. The result is that babies continue to be at risk from deaths that may easily be prevented."

http://www.healthychild.com/has-the-cause-of-crib-death-sids-been-found