1.0WAMUhttps://wamu.orgWAMUhttps://wamu.orgrich600338<blockquote class="wp-embedded-content" data-secret="HN8OViootA"><a href="https://wamu.org/story/22/04/19/better-ventilation-would-create-a-healthier-workplace-but-companies-have-to-invest/">Better ventilation would create a healthier workplace — but companies have to invest</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://wamu.org/story/22/04/19/better-ventilation-would-create-a-healthier-workplace-but-companies-have-to-invest/embed/#?secret=HN8OViootA" width="600" height="338" title="“Better ventilation would create a healthier workplace — but companies have to invest” — WAMU" data-secret="HN8OViootA" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> https://wamu.org/wp-content/uploads/2022/04/gettyimages-1227832582_wide-73f6474a07c3e126ad53102b1a4228ffa19f4bd6.jpg1018572The research is clear that air exchange and filtration curb the spread of COVID and other diseases, but upgrading systems is expensive, and there is little federal authority over indoor air quality.