As we know Freon is the most commonly used refrigerants than all other alternatives but as time goes it has been through many controversies. It is because it is known to have a very bad impact on our environment and because of it, it is now banned in the USA. Chloroform is a chemical that is used to produce a very good odor. It is also used to make refrigerants, pesticides, etc. This chemical is also known to make a person unconscious if you inhaled it directly because of what is being shown on the TV which is partially true. This is why this chemical is heavily regulated and it is kept away from public lands without a permit. As the technology and economy rapidly rising the demand for refrigerant is constantly rising as well it is being used in our air conditioner and other appliances that generate cold.