Not even that. He was headed to Cuba, the US government forced him to be in Russia.
“NSA leaker Edward Snowden got stuck at a Moscow airport after Cuba, feeling pressure from Washington, warned that it would not allow an Aeroflot flight from Russia to land in Havana if he were aboard”
The majority of microplastics found in the human body are tire rubber that gets breathed in. So all we have to do is ban cars.