Ramadan Breath
The bad breath associated with fasting. You will usually be able to smell it during the holy month, and it will leave a nasty taste in your mouth leading you to vomit which will break your fast. An enclosed space filled with people fasting will usually smell like Ramadan breath.
Dude 1: Man you've got nasty BO
Dude 2: Nah it's just the Ramadan Breath
Dude 2: Nah it's just the Ramadan Breath