Alice walks into Bob's office late at night when the lights are off. Bob is sitting at his desk facing away from the door. Alice starts telling him about the Ancient Conspiracy
she's uncovered, and urges him to come and help her. When he doesn't respond, she walks up to his desk and turns his chair around - only to recoil in horror when she discovers that he's dead, and has been for several days.
But hold on - why didn't she notice the smell of his flesh rotting?
This trope is when the characters in visual media seem not to possess the traditional five senses (sight, hearing, smell, touch and taste), instead limited solely to sight and hearing - because, naturally, the audience is only experiencing the work through these senses. It is most obvious in the case of characters seeming to be oblivious to smells that should logically be there (such as rotting flesh, as above), but it is not unusual to see characters not seeming to notice certain gustatory or tactile sensations even though they should be obvious. It can even happen with senses beyond the traditional five, with characters appearing oblivious to extremes of temperature (see Convection Schmonvection
It is most commonly seen in film, television and video games, but other visual media such as theatre can be affected also (there is nothing stopping theatre directors simulating the smell of, for example, rotting bodies in their plays, but most do not, as the audience probably would not appreciate this dose of realism).
Subtrope of Rule of Perception
. Sister Trope
to Behind the Black
(when characters in a work of fiction can't see something because the audience can't).
- In the first Saw film, the ending reveals that the supposedly dead body in the middle of the bathroom was actually the killer, alive and well. One wonders why the characters didn't notice that they couldn't smell his body rotting. Could be justified by the fact that the bathroom already smelled fairly ghastly anyway, which might have helped to disguise the absence of the smell.
- The music video for Bullet For My Valentine's song "Tears Don't Fall" culminates in a jilted woman breaking into her ex-boyfriend's motel room while he and his new lover are wide awake in bed together, and dousing them in liquid from a petrol can - only to reveal that it was actually water, not petrol. As many YouTube commenters noted, the ex-boyfriend and the other woman don't seem to notice that the liquid being poured on them is scentless and has the consistency and colour of water.