This includes faith in the Holy Rag and the tenets of the Sickness Cult, which is a religion by any rational definition.
It requires belief that anything – literally, anything – that covers the face is effective as a barrier against sickness, which is the same as believing that a cracker and some grape juice becomes "the body of Christ" – literally – when a priest performs the necessary
It requires belief in the assertion that a person who isn't sick can get people sick – which amounts to the same as belief in the assertion of demonic possession and propagation.
No offense meant. A point is being made, that's all.