$120 Electronic Nose to detect if meat is safe to eat

The hand-held gadget analyzes temperature, humidity, ammonia (found in “pink slime”), and other organic compounds to determine whether beef, poultry, pork, or fish is safe to eat. Just point the device toward the meat, click a button, and the data is sent to a smartphone or tablet. An app will produce a “fresh” or “not fresh” message as well as a detailed reading of the compounds present in the food. The folks behind it claim an accuracy rate of 80 to 95 percent.

http://www.myfoodsniffer.com
http://www.takepart.com/video/2015/02/04/food-sniffer-rotten-meat
Note: Self reliance and self testing!