Smetanina kuma yana da nasarori a FIS Nordic World Ski Championships, ya lashe zinare huɗu (20 km (1982), da 4 × 5 km relay (1974, 1985, da 1991), azurfa uku (10 km (
1978), da kuma 4 × 5 km relay (1982, 1989)), da tagulla hudu (4 × 5 km relay (1978), 5 km (1974, 1978), da kuma 20 km (1980)). Ta kuma ci nasara sau uku a bikin wasan tsere na Holmenkollen, sau ɗaya a cikin kilomita 10 (1975) da sau biyu a cikin kilomita 5 (1975 da 1979).