The stale and sour smelling breath that occurs after one has been traveling for a number of hours. Usually caused by insufficient fluids and made worse by stale air in a car or airplane. In worst cases travel breath is coupled with "Airport Sweat"
I was so excited to see Duffy after his long drive down from Pittsburgh but his travel breath was kickin!
by Jrh December 14, 2013
Get the Travel breathmug.