Lactose intolerant is the inability to digest sugar in dairy products. Lactose intolerance is usually caused by a deficiency of an enzyme in the body called lactase.
Answer: I feel like the masks don't really stop anything because if you don't wear them correctly like most people, then why bother wearing them? If the point of them is to cover your mouth and nose and people wear the masks only covering their mouth what is the mask doing at that point. Nothing basically.
Explanation: there is my opinion.
Because it can back up your decisions when your about to do something.
