05 Armada SE, 2700 miles on it. First trip to the mountains towing a 23' Outback...probably 5k loaded. Started to get a transmission smell on the way up and it was more noticable in the cab than outside. On the way home got it again. This morning the garage reeks of transmission fluid. No drips or visible signs around the motor. Didn't drive it hard and the temp gauges never moved from normal. Anyone experience this? Could this be a new motor blow-by and burn-off?