Med Hypotheses 2020[Nov]; 144 (ä): 110010 PMID32592922show ga
The in-mask micro-climate is heat and moisture buildup under facemasks but facemask doffing can immediately neutralize in-mask elevations in temperature and relative humidity. Therefore, home/workplace/facility living with in-mask micro-climate during COVID-19 pandemic warrants safe provisions for intermittent facemask "vacation".