fumigation. 薰煙消毒

A horse grazes amid fumigation fog, released to kill Aedes Aegypti mosquitos, in Pinar del Rio, Cuba, March 1, 2016.
March 2, 2016
http://www.voanews.com/media/photogallery/march-2-2016-day-in-photos/3216729.html

家禽場之衛生消毒 - 獸醫科技資訊網 - 家畜衛生試驗所

薰煙消毒法(fumigation)