Many gases have toxic properties, which are often assessed using the LC50 (median lethal dose) measure. Among the best known toxic gases are carbon monoxide, chlorine, nitrogen dioxide and phosgene.
Detecting gas leaks in your home needs to be a top priority. Poisonous gases present serious danger to health and safety because they are invisible, which makes it difficult to know if you and your household are at risk. Failure to identify a high level of gas in your home can cause illness, danger of explosion, and death.