Scratch-and-Sniff Cards Still Worked...
The natural gas supplier Energy West distributes scratch-and-snif... ...ers so they can learn to recognize the smell of a gas leak . That backfired in Great Falls, Montana. When a b... ...left behind the smell people think of as natural gas .“It’s really, really po...
https://www.neatorama.com/2013/05/10/Scratch-and-Sniff-Cards-Still-Worked/
