Gasping for air

Asphyxia, a whumper who can suck off the oxygen out of the room, great altitudes, a strong punch on the stomach... Basically any situation where the whumpee just can't properly breathe.

Check the complete Tropes index for more.

TV Shows
Doctor Who (2005)


 * 3x01: With the hospital quickly running out of oxygen (being teleported to the moon) and another threat just around the corner, Martha Jones (Freema Agyeman)  uses her last share of air to bring the 10th Doctor back with CPR before collapsing.

MacGyver (2016)


 * 5x07: Angus MacGyver (Lucas Till) and Desi are attacked inside a lab, and are struggling to put the attacker down... who uses a plastic bag to suffocate Mac.

Powers


 * 1x08: Johnnt's teleportation power can (if he chooses to) take the oxygen around away with him, so when he and Christian Walker (Sharlto Copley) are arguing, Walker is left on the ground, gasping for air.