Just been notified of this, if you have been issued or purchased masks recently, HSE have issued warnings over the use of KN95 Please check out their website
https://www.hse.gov.uk/safetybullet...=kn95-safety-alert&utm_content=home-page-news
https://www.hse.gov.uk/safetybullet...=kn95-safety-alert&utm_content=home-page-news