“Your breath stinks”… If you have heard that before, and you are oblivious to the your own breath you may need the etiquette checker by Topland. The unit works like a breathalyzer (in fact it has one built in as well), in that you blow on the sensor and it will rate you from 1 to 6. If the unit displays a 6 you may have mold growing in your mouth, get a toothbrush… quick. Buy this as a subtle hint for your yuck mouth friends for $59.

{Via}