The mask is to both protect others and yourself from spreading or becoming infected, respectively. If a person's test becomes positive, does the mask keep more virus while shedding within the lungs, increasing more infected lung tissue by not expelling free virus into the environment? In other words, does the mask act like a cork in a wine bottle? Thus, causing more compromised alveoli cells, increasing the cytokine storm damage, increasing hypoxia due to massive assembly, replication, and shedding of virus merely by the simple mask?