Again for anyone suggesting that physical mitigations don't work, especially fools that fund nonsense studies that don't use things like HEPA filters properly. You're going to have a hard time explaining this. Multi-pathogen airborne disease suppression achieved at

I once showed this exact chart to 1st year undergrads and asked if they thought it might persuade them to mask in winter flu season. They all replied no. I was delivering the lecture in a mask by the way.