Overall, liability simply describes some form of obligation specific release liability or responsibility. For example, person who lived near commercial chicken farm might claim to have developed allergic asthma as result of breathing dust from the chicken farm over many months. Additionally, claims involving real estate may also take the form of an implied warranty of habitability. Since that time, businesses have operated under an understanding that because they knowingly market products which affect the interests of consumers, they owe legal duty of caution and prudence to consumers. However, because consumers are not willing to pay for this insurance, proponents of strict liability would argue that this is evidence of product whose harm outweighs its good, in which case it should be removed from the market. These companies would like to be immune to state level consumer safety laws, which are sometimes tougher than national standards.