10 Dumbest Decisions In Sci-Fi Movie History

3. Kissing An Infected Person - 28 Weeks Later

28 Weeks Later is a surprisingly great horror sequel (for the most part), that opens with a riveting sequence where Don (Robert Carlyle) makes the agonising decision to save himself while leaving his wife Alice (Catherine McCormack) to be presumably ripped apart by the Rage-infected horde.

Except, it later turns out that Alice survived the incident, and when Don learns of this fact, he naturally rushes to her bedside by sneaking into her quarantined room.

And like the guilt-ridden, loved-up idiot he is, he immediately gives her a passionate smooch on the lips without considering the possibility that, y'know, she might be a teensy bit infected, being in quarantine and all.

Alice is in fact an asymptomatic carrier of the Rage virus, causing Don to immediately become infected and kill Alice, resulting in many, many more deaths (including his own) all because he just had to give his wife a kiss.

Granted, intense security measures should've saved Don from himself here, but even accepting his very special set of circumstances, it's still a head-smackingly stupid decision.