My neighbors chickens have coryza he said there is a very bad oder along with swollen eyes and nasal discharge his chicken lot is about 200 ft. from my house. My other neighbor is loosing chickens left and right swollen eyes then quit eating and fall over dead. his lot is about 400 ft. from my house is this stuff airborn? I dont want mine getting sick and have to cull everyone of my chickens. we practice bio security, i dont let anyone in my pens. but about 3 weeks ago we were giving him some quail and he just politely walks in my leghorn pen I asked him to please stay outside but he went in anyway. please tell me my chickens are not going to get sick.