@GentleBenj @AbraarKaran @CDCgov @WhiteHouse @WHCOVIDResponse Except "public use of specialized respirators" is already recommended for wildfire smoke. 🤡🤡🤡
https://twitter.com/DrEricDing...
@GentleBenj@AbraarKaran@CDCgov@WhiteHouse@WHCOVIDResponse，野火烟雾已建议“公众使用专用呼吸器”。🤡🤡🤡
https://twitter.com/DrEricDing...