"5 Sources confirms this and the local newspapers of Kiev also received hundreds of phone calls from residents and business owners close to the area the planes were spraying the suspicious substance. Not only that but local businesses and retailers were "advised" to stay indoors during the day by the local authorities.
As if that is not enough, the government authorities also pushed the radio stations in Kiev to deny the reports. Online on forums, websites and blogs reports came in about eye witness accounts that confirms this. There was also reports of helicopters spraying aerosols over Kiev, Lviv, Ternopil and throughout Ukraine."