No, it is not recommended to use nic salts in sub-ohm devices. Sub-ohm devices are designed for use with low-nicotine, high-VG (vegetable glycerine) e-liquids. Using high-strength nicotine salt e-liquids in a sub-ohm setup can result in an extremely high nicotine intake. This may lead to overconsumption of nicotine, harsh throat hits, and an uncomfortable vaping experience.
Low-wattage, mouth-to-lung (MTL) devices like pod systems and vape pens are better suited for nicotine salts. These devices are designed to work with higher-nicotine e-liquids and provide a smoother, more satisfying experience. It is suggested for users looking to satisfy their nicotine cravings without the need for high wattages.