Smellovision

Based at the School of Engineering at the Tokyo Institute of Technology, Professor Nakamoto is building a range of gadgets and sensors which sniff, mix and pump out a range of hundreds of scents.

"Our intention is to make all smells reproducible," Professor Nakamoto said. "So, in this case we have combined two techniques: smell detection and smell generation."

A scene where the main character's parents gorge themselves on food before being transformed into pigs was enhanced with the smells of Chinese food, tofu and eventually the whiff of a pigsty.