Unsymmetrical dimethylhydrazine (UDMH) (1,1-dimethylhydrazine) is a chemical compound with the formula H2NN(CH3)2. It is a colourless liquid, with a sharp, fishy, ammoniacal smell typical for organic amines. Samples turn yellowish on exposure to air and absorb oxygen and carbon dioxide. It mixes completely with water, ethanol, and kerosene. In concentration between 2.5% and 95% in air, its vapors are flammable. It is not sensitive to shock. Symmetrical dimethylhydrazine (CH3NHNH(CH3)) is also known but is not as useful.The initial explosion from the Saudi weapon and the billowing pristine white cloud afterward are indicative of a lie, you see Scud fuel burns yellow and brown, the vapor trails on launch unwholesome and ugly.
Red Cross/Red Crescent: Tens of Yemeni children killed by Saudi Poison Gas ~ link ~
Yemen's Red Crescent Society disclosed that tens of children have died as a result of inhaling the poisonous gases of the Saudi bombs thrown on the people in Sana'a.