The tricky part is that the benefit is invisible. If it works, nothing happens: people just get sick less often. That is a hard thing to sell to building owners and employers unless the evidence and standards are really solid
It seems like implementing HEPA filters in every classrooms has the biggest effect. The kids are spreading disease, infecting their parents, who then infect their coworkers.
Nice to see they mention UV, too. Aerolamp[0] is down to ~$500. If it were $100, it'd be easy to get into offices, too. Heck, if I worked in person, I'd buy a $100 one as an employee.
