The masks are spreading the virus by keeping exhale at eye level and spreading onto your own face and leaving the vapor airborne for someone else to walk into; infection occurs through the eye.
Ocular Findings of Patients With COVID-19 March 31, 2020
https://media.jamanetwork.com/news-item/ocular-findings-of-patients-with-covid-19/
Chinese expert who came down with Wuhan coronavirus after saying it was controllable thinks he was infected through his eyes January 23, 2020
https://www.scmp.com/news/china/article/3047394/chinese-expert-who-came-down-wuhan-coronavirus-after-saying-it-was