S.F. to high-rises: Make sure your building's ventilators work FacebookTwitterEmail 1of2 Ramiro Rodriguez is among many janitors who fear getting COVID-19 while working in poorly ventilated buildings.Noah Berger / Special to The ChronicleShow MoreShow Less 2of2 Janitor Gloria Espinoza stands for a portrait March 5 at Service Employees International Union Local 87 headquarters in San Francisco.Noah Berger / Special to The ChronicleShow MoreShow Less San Francisco Supervisor Ahsha Safaí introduced an emergency ordinance on Tuesday that says city high-rises must comply with all regulations for building ventilation, and creates a system for filing complaints if they don’t. The impetus, of course, is the COVID-19 virus which is spread primarily through airborne respiratory droplets.