The Wyoming Department of Health is reminding residents, especially those with heart or respiratory problems, to avoid breathing in air contaminated by smoke from wildfires. Spokeswoman Kim Deti says small children are also susceptible to such air contamination. Deti says for the most part people should simply observe common sense guidelines, such as avoiding wildfire smoke if they find it makes them sick. She says generally people should avoid heavy outdoor exercise on smoky days, and people who are especially smoke-sensitive may want to try to stay indoors. She also says people may want to avoid even some indoor activities on such days, such as vacuuming or smoking.