Doctor; professor of paediatrics. During the German occupation he worked in Rozwadów. He often got into the ghetto to treat the Jews who were gathered there. When another doctor and a friend of his, Stanisław Matulewicz, discovered that positive result of typhus test could be obtained using certain harmless bacteria, Łazowski started to use the vaccine to simulate an epidemic and thus keep the Germans away from the local population. Thereby he saved many inhabitants of Rozwadów and the surrounding area including many Jews from the nearby ghetto.