10月起加拿大不准带呼吸阀等4种口(面)罩进机场！

（https://www.canada.ca/en/public-health/services/diseases/2019-novel-coronavirus-infection/prevention-risks/about-non-medical-masks-face-coverings.html）

credit:https://store-ca.tinkerine.com/products/face-mask-clear-campaign

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