This was possibly one from Diabolik.
Gas scene from Nikita - not a kidnap, but a rescue
One of Jeri Ryan's first appearances,
in Dark Skies
A scene from Relic Hunter - the bad guys slip Tia Carrere a Mickey
The laughing gas scene from "Ice Man" - an episode of She Spies
A planeload of passengers gets gassed
And of course, this famous scene from the Fantastic Four where Sue Storm gets gassed
Enjoy.
