-1 points
No. The cold virus replicates faster in cold environments like your nose. So it is true. But you can just get warm quickly again to counteract.
2 points
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Your sinuses being cold contributes to reduced immunity to any airborne pathogens. So why do we tend to get specifically colds (and flu) when it’s cold out? It is likely because we are inside, in enclosed spaces, much longer and more frequently. Colds will spread around schools and workplaces just fine without cool weather.
Wear a mask.
