The risk of contagion is highest in indoor spaces but can be reduced by applying all available measures to combat infection via aerosols. Here is article based on learning from Spain which overviews the likelihood of infection in three everyday scenarios, based on the safety measures used and the length of exposure. Source: EL PAÍS

https://english.elpais.com/society/2020-10-28/a-room-a-bar-and-a-class-how-the-coronavirus-is-spread-through-the-air.html?ssm=TW_CC&fbclid=IwAR3mATd2xMiR0Am9-LOPGNpkdGKOHWNFUi7X-1hD1yMATul5v8oj5lGLMUk