Good dogs excel at new trick of Covid detection at Miami airport

https://www.msnbc.com/rachel-maddow/watch/good-dogs-excel-at-new-trick-of-covid-detection-at-miami-airport [login to see] 63?cid=sm_fb_maddow&fbclid=IwAR2SCXu0jbHK1B4_gak7wXtsCB-TrQRgnMAco-zQaw1MQp8GqWDprbBwI3k
"Rachel Maddow reports on a new program at Miami International Airport that uses dogs trained to sniff out Covid infection as a preliminary check of airport staff arriving to work."