Oozoniin lafa bira jiru (O₃) yeroo ifti aduu walnyaatinsa oksaayidoota naayitiroojiinii fi kompaawundoota orgaanikii dafee hurkan hirmaachisu kakaasu uumama. Sadarkaan isaa yeroo baay'ee haala qilleensaa aduu qabu keessatti ol ka'a; faalamnis maddoota isaa irraa gara fagootti geeffamuu danda'a. Oozoniin lafa bira jiru miidhaa qaba; baqqaana oozonii ol fagoo qilleensa naannoo lafaa keessa jiru kan nu eegu irraa adda.
WHO: wantoota qilleensa faalanii fi fayyaa