Sleeping with fan on is safe

Monday, 6 July 2026 06:30

Geneva doctors are pushing back against viral claims that sleeping with a fan on is dangerous.

Louise Bondeelle, a pulmonologist at Geneva University Hospital, says a fan does not spread viruses.

Any morning throat or nose dryness is down to low humidity in the room, not the device itself.

Fans do stir up dust and allergens, so regular cleaning of the blades helps sensitive sleepers.

The benefit is real: fans help the body shed heat through sweat, and studies show they lower core temperature and heart rate.

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