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//My masks don’t get damp. Am I breathing wrongly?//
If they are not getting damp they are probably not doing much to prevent the virus escaping from your airways. It's said that the virus travels in respiratory droplets which are exhaled and these are made up predominantly of water. If your mask isn't damp after a while it is a mystery where all this water has gone. Damp masks are less effective than dry ones and they also present an increased danger to the wearer. That's why part of the discipline instilled in medical professionals who need to wear them involves changing them frequently. Virtually nobody I know or who I have observed does that.
//...but that comment doesn't convey the necessary disdain some want to put forward.//
The term "damp rag" is not to bestow any distain. It's simply a description a what the vast majority of face coverings are.