In the summer, we have a fan on all night. If we’re chilly, we use a sheet (and a blanket over the baby, if we have one in the room).
A baby is exposed to the germs in your house due to contact with infected people; germs on surfaces or in the air generally don’t live long. Air circulation, unless someone in the room is coughing and sneezing a great deal, doesn’t seem a particular risk.
The research I’ve read suggests that many SIDS cases are a form of suffocation - either an obvious form, like the baby’s mouth being under a pillow or toy, or carbon-dioxide suffocation because it’s flat on its face and doesn’t move. Keeping the air moving around the baby could make a difference.
It's at once wonderful and horrible that something so easy may make a large difference.
Exactly.
How many adults die peacefully in there sleep?
Same theory is Carbon Dioxide due to lack of air flow or some other medical condition (snoring ect).