When you walk into a room (most often the kitchen) and it's disturbingly obvious that someone just opened the trash lid, if only for a second, and let out a gas cloud of nastiness.

Usually this occurs when everybody in your shared apartment thinks it's someone else's job this month to change the kitchen trash bag.
Dude I just walked through the nastiest trash-fart in the kitchen! Who threw something away??

Man I think those girls left your party because I threw away my takeout boxes and the wretched trash-fart almost killed their friend.

If someone doesn't change the trashbag in this bitch soon, we're all gonna die from the trash farts! Whose month is it?
by sumpin_speshal August 15, 2009
When someone's gas smells like old rotten trash. It is a distinct smell unlike other farts ie. eggfarts, dairyfarts, shitfarts. You literally can smell something rotting away in the culprits intestines. Sometimes, it requires intervention with a shop-vac.
Dude! That was a rancid trashfart! Go check your drawers!
by adsz June 05, 2010

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