��s Toronto-based company WeavAir sells sensor and data-collection technology designed to improve air quality, cut maintenance and energy costs, and improve efficiency in places ranging from mass transit hubs to hotels. </p>
                <p> Customers and prospective buyers started asking for something that would measure viruses and bacteria in the air after COVID-19 was declared a pandemic last year, but the technology didn’t exist. Mykhaylova, whose background includes degrees in chemical engineering