Data: 03/08/2020
https://www.youtube.com/watch?v=l33a25lchT8
The prolonged use of medical masks can be uncomfortable. However, it does not lead to CO2 intoxication nor oxygen deficiency. While wearing a medical mask, make sure it fits properly and that it is tight enough to allow you to breathe normally. Do not re-use a disposable mask and always change it as soon as it gets damp.
Idioma: Inglês Duração: 1 vídeo do youtube (0:32 min): son., color. Editor: World Health Organization