"If you tell a lie big enough and tell it frequently enough, people will eventually come to believe it". What is an example of this happening today?
I would really rather that these were actual examples, and not conspiracy theories. We all have our own unsubstantiated ideas about what shadowy no-gooders are doing, but I'd rather hear about things that are actually happening.
While being cold isn't the cause of a cold there are some links between being cold and transmission of the flu even beyond people huddling together inside.
The lipids the viruses attach to become more durable hence resilient, and multiple studies have shown that cold temperatures have a suppressive effect on the immune system.
IIRC there's some evidence that cold temperatures weaken the immune system. Assuming it's valid, that does mean that cold could be the deciding factor between contracting a cold or fighting if off.
Now obviously germ theory is correct and it takes external infection to catch a cold, but it's a pretty safe bet you're being more or less constantly exposed to COVID and the flu whenever you're in an indoor public space.