Michal Drahus from the group of scientists, studying the comet C/2010 X1 Elenin on the James Clark Maxwell Telescope (JCMT), located in Hawaii, according to the results of the last observation, reported, that the comet C / 2010 X1 Elenin throws out in space an almost 673 grams of hydrocyanic acid per second. Hydrocyanic acid is known primarily as the strongest poison, which is even supposed to use in the production of chemical weapons. Comet C/2010 X1 Elenin was opened in December 2010 by Russian astronomer Leonid Elenin. But it is very unlikely, that the hydrocyanic acid from comet C/2010 X1 Elenin will make any impact on the population of the Earth, the comet will approach to Earth not less, than 35 million km.