If there is mold on cream cheese, you should cut at least one inch around and below the moldy spot, making sure not to touch the mold with the knife.

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases. 

Answera tightly sealed house with an unvented water heater;

Yes, most genetic diseases can not be cured. usually it can be treated. just like hereditatary prostate and breast cancer. so may i know what the choices are? the choices could not be found in your question. : )