It's time for another round of myth busters - the food edition. To put these culinary urban legends to the test, we turned to food connoisseur Ted Allen - host of a new TV show called "Food Detectives" on the Food Network. Food myth #1: Double dipping transmits germs. That's TRUE. In an experiment that involved food technicians double-dipping, and even triple-dipping a bag of potato chips, scientists found the results disturbingly dirty. All it takes is one single bite to transfer more than 10-thousand bacteria from the mouth back into a bowl of dip. Food myth #2: Chewing gum stays in your stomach for 7 years if you swallow it. That's FALSE, according to the Food Detectives. Their experts designed 2 see-through prop stomachs, which were loaded with enough stomach acid to represent the digestion of a real stomach. In one prop they dropped some food, and in the other they dropped a giant gumball. While the gum didn't digest, it still passed through the digestive tract like any other food - all within 24 hours. Next food myth: Baking soda absorbs nasty refrigerator odors. That one's TRUE, according to a simple side-by-side "smell test". Researchers loaded two refrigerators with rotting, rancid food. The one that was stocked with a pound of baking soda actually smelled less foul than the fridge with no baking soda. However, experts say an even better fix for bad odors is to use activated charcoal - which you can buy in any drug store in the first aid section. Charcoal is more porous than baking soda, so it'll absorb more of the molecules that cause odor. Here's one last food myth: Eggs and grapes are dangerous in a microwave. Again, that's TRUE. The Food Detectives found that eggs will explode in a microwave if you don't puncture them first and grapes can cause sparks if they're heated under certain conditions. In fact, most liquid-based foods can explode in a microwave if they become superheated - including water! So it's best to heat them for only a short time.