Usually, if you bake smelly substances only once or twice in a while, it usually does not hurt your lungs. However, if you bake a lot of smelly substances over a long period of time, it may harm your lungs. In life, some people will occasionally bake meats, vegetables and other smelly substances, which generally does not cause greater harm to the lungs. This is mainly because the organism itself has a certain metabolism, which is not enough to produce harm to the lungs. However, if a large amount of baking is done for a long period of time, coupled with a closed, airless baking environment, it may harm the lungs. Because in the baking process, a large amount of fumes and so on will stimulate the lungs, respiratory tract, etc., which will easily lead to the accumulation of dust and fumes in the lungs and harm the lungs, such as the emergence of chronic obstructive pulmonary disease and lung cancer. It is recommended that when baking smelly substances in your life, try to choose a place with spacious ventilation. At the same time, if the body has some reactions, such as coughing, coughing up phlegm, etc., it is recommended to consult a doctor in time.