Like the pp said. Wash your hands. Don't touch your face. Eat citrus and drink a lot of liquids to constantly flush your system. Vaseline I'm inside of nasal passages so they're not cracked and more Susceptible to viruses. There are studies that being cold lowers your immunity a little bit and makes you more vulnerable to the common cold so wear a hat and gloves and warm dry socks.

Wash your hands a lot and keep your hands away from eyes and mouth as much as possible. That’s about it.

how to protect yourself and your children from seasonal viruses?
can there is any sensible old methods which and to this day well help
I will be very grateful for your response and all happy holidays