Dr Radhakanta Koner, Secretary, Breakthrough Science Society, West Bengal Chapter sent a memorandum today to Director, Birla Industrial & Technological Meseum, in which the Breakthrough Science Society expressed concern over installation of “Ayurvedic Disinfectant Tunnel” at the premises of BITM. In the letter, Breakthrough Science Society asked for scientific evidence of the efficacy of 2:1:1 combination of thyme, camphor and menthol in protecting humans against the novel coronavirus.