evidence: Dr Ravindra M Mehta, senior consultant and head of department, pulmonology and interventional pulmonology at Apollo Speciality Hospitals, Jayanagar, Bangalore, dismissed the claim and said that it doesn’t help elevate blood oxygen levels. "Naturopathic solutions have been part of India’s heritage since time immemorial. There is no scientific proof in these modern times to substantiate it [camphor, clove, carom seeds and eucalyptus oil can increase oxygen levels]. Hence, I would put a cautious word out on behalf of the medical community that it is not advisable to depend on these and you must immediately seek medical help," he further explained. [...] So, one can see that this viral potli doing the rounds on your WhatsApp group, containing camphor, clove, carom seeds and eucalyptus oil, is not effective in increasing blood oxygen levels. It may help relieve congestion and associated headache, but those aren’t proven claims either. Be it high altitude or COVID-19, seeking medical help if your body is facing a shortage of oxygen, is a prerequisite.