Is it harmful to breathe freezer coolant?

Breathing freezer coolant is very harmful. The common type of freezer coolant used in most refrigerators and freezers is a chemical called hydrofluorocarbon (HFC). When these chemicals are exposed to air, they break down into harmful compounds that can cause severe health problems when inhaled. These compounds can include hydrogen fluoride and phosgene, both of which are highly toxic gases that can cause severe lung damage and even death at higher concentrations. In addition, HFCs can also contribute to the depletion of the ozone layer, which is essential in protecting the Earth from harmful ultraviolet radiation. For these reasons, it is important to never breathe in freezer coolant directly and always be sure to use caution when working with any appliances containing these chemicals.