#H5N1-infected farm workers were culling in 104℉:
"may have made wearing protective clothing and equipment nearly intolerable… necessitated the use of large fans, which may have promoted the virus’s spread via…"
Wait for it.
"…feathers, dust and other poultry detritus". Three things that carry pathogens necessitating protective equipment at best of times.
Worse: culling was done by one-on-one CO₂ gassing‽
i.e., gas wut helps virus!