Smoke inhalation can thus quickly bring about incapacitation and loss of consciousness. Sulfur oxides, hydrogen chloride and hydrogen fluoride in contact with moisture form sulfuric, hydrochloric and hydrofluoric acid, which can be corrosive to equally lungs and materials. Using tobacco might be dated to as early as 5000 BCE, https://nmate02456.wikicorrespondence.com/4527611/the_definitive_guide_to_cigarettes