Branding the mask as 'antiseptic', Mahendra said that a doctor from a government hospital had suggested him to use Neem leaves inside the mask.
Twitter, which had so far refused to follow the rules, proposed the name of an external consultant, although the government summarily rejected it because they did not conform to the guidelines.
Major VS Dhoundiyal was martyred only after 10 months of his marriage and would have celebrated his first marriage anniversary in April 2019.
The drug has been developed by the DRDO, a prestigious laboratory of the Institute of Nuclear Medicine and Allied Sciences (INMAS) in collaboration with the Dr Reddy Laboratory, Hyderabad.
Assam Police had released pictures of five suspected criminals and sought more information from the public for their arrest.