Don't do it!

"Scientists in Russia’s Omsk region rushed to discover what had caused a foul-smelling yellow snow to blanket 580 square miles near the Siberian border with Kazakhstan.

Residents were initially warned not to come in contact with the colorful frozen precipitation. But officials later said a chemical analysis showed the snow contained only yellow and orange dust, which was whipped up by a massive windstorm that moved from the Black Sea into Kazakhstan just before the smelly snow arrived. Lyudmila Vorodina, director of the West Siberian Meteorology Center, speculated the snow could have acquired its color from mud around the depleted Aral Sea."
www.earthweek.com