Dry herb vaporizers are widely regarded as the lower-irritation alternative to combustion smoking because no smoke, tar, or combustion byproducts are produced — the device heats below the combustion point of plant matter so the active compounds release as vapor rather than smoke. Independent peer-reviewed studies, including the long-running work cited by Storz & Bickel for the Volcano, show vapor from a quality dry herb vape contains a fraction of the irritants and particulates of combusted smoke. That said, vaporization is not zero-risk; any inhaled aerosol affects the airways and long-term effects depend on use frequency, temperature, and device quality. Reduce risk further by buying a device with full-convection or hybrid heating, keeping the temperature in the 320F to 400F band, cleaning the chamber and mouthpiece on schedule, and using clean, dry, properly-stored flower. Cheap pen-style vapes with painted internals are the category most often associated with off-gassing — stick to vetted brands like the ones in this collection from Storz & Bickel, Dr. Dabber, Focus V, and G Pen.