Cost: ~$12 for a personal clip-on fan (6in)
If you’re in a public space and you’re not sure if there are good airflow and filtration (like an office with closed windows and no fans, or an airport/mall), try this simple hack using a hand-held or clip-on personal fan:
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Hold the clip-on fan near your face, attach it to a sturdy collar on a shirt or jacket, or clip onto the strap of a backpack/purse hanging from your shoulder.
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Position the fan so that air is blowing away from your face
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This will increase the velocity of air around your face and blow larger droplets away from your face, which may reduce your risk of infection
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Make sure to still wear your own mask properly and maintain physical distance from others whenever possible.