Covid-19: ecig only add 1% of risk compared to breathing
Incredibly, people close to an infected vaper using an e-cigarette in home or restaurant scenarios face a one percent increase of risk of contagion compared to the control case of a normal breathing (without vaping) inside closed spaces. This relative added risk becomes 5-17 percent for high intensity vaping and up to 260 percent for speaking for various periods and coughing.