Lev takes Irina through the cosmonaut training routine. While she surprises Lev and Anya in some aspects, other areas give her trouble.
"The Taste of Soda Water" 
"طعم المياه الغازية"
Der Geschmack von Sprudelwasser
EL SABOR DEL AGUA CON GAS
LE GOÛT DE L’EAU GAZEUSE
O sabor da água com gás
Вкус газированной воды