You should not be in that bad environment because it will make your health worse in the evenings and you don't feel comfortable, you should avoid the cold air and exhaust area because it will stimulate the symptoms of the disease, harder.
You should not be in an environment that is not good because it will make your health worse, and when you are sick, you should avoid the cold air and the area with smoke, because it stimulates the symptoms of a heavy. go up
You shouldn"t be in the environment that is good because it makes your health worsened, and when you"re not comfortable you should avoid the cold weather and the smoke because it will trigger the symptoms of the disease make hard up.