1919: If You Must Smoke While Wearing Your Influenza Mask April 13, 2021 No Comments Popular Science Monthly May 1919 (Page 33) If You Must Smoke While Wearing Your Influenza Mask Source Links: Read via Google Books: If You Must Smoke While Wearing Your Influenza Mask Previous Post Next Post You may also like May 6, 2021 1979: 60 Minutes with Mike Wallace Discusses the 1976 Swine Flu February 22, 2021 1923: Registering Human Pedigrees May 6, 2021 2004: Nurse Remembers Experiment Victims