evidence: In one such viral message, it is being claimed that to increase the oxygen level one should inhale camphor, clove, ajwain and eucalyptus oil. [...] The viral message reads as: Camphor, lavang, ajwain, few drops eucalyptus oil. Make potli and keep smelling it throughout the day and night. Helps increase oxygen levels and congestion. This potli is also given to tourists in Ladakh when oxygen levels are low. Many ambulances are now keeping these too. It's a home remedy. [...] Similarly, Carom seeds (Ajwain) are the seeds of the ajwain herb. They’re commonly used in Indian cuisine. There is limited research to suggest that carom seeds may have anti-coughing effects and could help increase airflow to the lungs. More research is needed to better understand the effect of carom seeds on coughing and other respiratory symptoms in humans.