Traces of vanadium in superior-temperature combustion solutions type droplets of molten vanadates. These attack the passivation levels on metals and result in higher temperature corrosion, that is a concern especially for inner combustion engines. Molten sulfate and direct particulates even have this sort of effect. Smoke from oxygen-deprived fires https://broadfar.com/the-benefits-of-switching-to-nusos-heated-tobacco-solutions/