When you dont have any symptoms, then there is no virus in saliva or so little that it is unlikely to infect anyone except possibly a new-born baby
Casey's House built an enclosed room with windows for observation and a high-powered ventilation system so staff aren't exposed to the smoke
"And oh, I want it to be an orange tip on the end and say Orange on the packaging
Beauval N, Antherieu S, Soyez M, Gengler N, Grova N, Howsam M, Hardy EM, Fischer M, Appenzeller BMR, Goossens JF, Allorge D, Garon G, Lo-Guidice JM, Garat A (2017) Chemical evaluation of electronic cigarettes: multicomponent analysis of liquid refills and their corresponding aerosols
Tobacco-Related Mortality Atlanta, GA:Centers for Disease Control and Prevention