Smoking any drugs/plants such as marijuana, hashish, or tobacco is bad for the lungs. Smoke hurts the lungs and the throat because the smoke has tar in it and when any form of plant matter is combusted, some of the plant is processed into carcinogenic smoke which have cancer causing potential for the physical respiratory system excluding the heart, including lungs throat and mouth. There are much less carcinogens in cannabis/hash smoke than tobacco as cannabis contains no carcinogens itself until burnt. A person who only eats hashish will not hurt their lungs or throat. A relatively newer process of inhalation which is much safer than smoking is vaporizing the hashish. This method is based on increasing the temperature of the hashish to 170-200 degrees Celsius which is about the temperature THC vaporizes but is far below the point when "carbons" begin being burned. The end result is the THC compound being breathed in combined with air rather than the THC compound being breathed in with smoke.