What's the truth about TikTok hacks for clearing colds?

A slew of bizarre hacks claiming to clear coughs and colds have emerged on this year.

One involves shoving a potato in your sock, claiming it draws out viruses through the foot.

Pressing a thumb to the forehead has also been suggested to help by distracting people from their symptoms, while drinking onion water has gained popularity due to the belief it eases a sore throat.

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