Grey and blue SNN200642 masks should no longer be used, warn Quebec and
Ottawa
One model of mask distributed to Quebec schools and daycares may be
dangerous for the lungs as they could contain a potentially toxic material,
according to a directive sent out by the provincial government on Friday. https://www.cbc.ca/news/canada/montreal/masks-early-pulmonary-toxicity-
quebec-schools-daycares-1.5966387
