“O uso prolongado da máscara produz hipóxia. Respirar repetidamente o ar expirado se transforma em dióxido de carbono, e é por isso que nos sentimos tontos.”
Social media posts
Boatos.org rated thisFalso
In short
This claim spread on social media. Boatos.org (Brazil) looked into it and published its finding on 6 May 2020. Its rating was “Falso”.
This check was done by Boatos.org, not by DoesItStand. We list it so you can find it. Their full evidence and reasoning are in their article.