Open windows, especially without screens, can invite mosquitoes, flies, and other insects, which may:
Disturb sleep
Carry diseases (e.g., mosquito-borne illnesses)
Bite and cause skin irritation
Tips for Safer Ventilation While Sleeping
If you enjoy fresh air but want to avoid risks:
Install window screens – Prevents insects from entering.
Use air purifiers – Reduces indoor allergens without opening windows.
Keep windows partially open or for limited times – Avoid drafts and exposure to pollutants.
Check air quality – Avoid opening windows during high pollen or pollution days.
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