I have a 2003 Camry XLE 4 cyl. There is a musty smell in the car, and nothing drips from under the car when I run the AC. I cannot locate the evaporation drain hose on this car. I assume this is the source of the smell. I have changed the cabin air filter and the smell is still there.

 

i dunno where it is in the gen 5's but in the gen 4's i think it was under the carpet, to the bottome left of the glove box. you have to take a few things out to get to it to see if its clogged. you need to fix it soon or you will get water damage inside your cabin. hopefully there isnt already damage.

 

its toward the middle of the car it comes down through the control arm on the passenger side through a round hole