evidence: Fact Check- Inhaling Camphor, Lavang, Ajwain, Eucalyptus Oil [...] For the past two days, one message is circulating on social media. The message recommends inhaling a heated mix of camphor, cloves, eucalyptus oil, and ajwain seed (carrom seeds) several times a day. All the ingredients are tied in a small cloth, called "potli" (spice bag). [...] We saw the claimed benefits of all these herbs and also saw the side effects and toxicity symptoms. Even though these herbs have some medicinal value and are traditionally being used for the treatment of cough and other respiratory problems, I couldn’t found any specific study focussed on their use in increasing the oxygen level of the body. They are primarily used as inhalers, to relieve cough, or as an expectorant as we saw earlier. More importantly, there are no studies focussing on the effectiveness of these herbs when they are used together.