recently my friend told me that wearing a mask will limit access to the oxygen. body without oxygen is gettin acidic and acid body is the best place for developing cancer. its partly true. partly, because masks wont block the oxygen flow. the rest is correct.
imagine that those masks really block the oxygen flow. it means that every surgeon, every dentist and most of Chinese people have cancer. c'mon bro, 4 real?
Whether or not that is true is up in the air to me. I just do not like it and my intuition says that I'm not wrong to stick to my opinion on the matter.