1995 Accord. On a short trip to a neighboring town, the ACstarted blowing smoke/vapor, no strong odor or smoky smell so I assume it's vapor. With AC off but blower on there is no vapor. The AC blows cool air.

I will check that the evaporator drain is not plugged. Are there other possibilities I should check?

 

Pretty normal to get some fog under certain conditions when the evap core goes into defrost mode.

 

It will happen if you live in the area that has high humidity

 

Thanks for the feedback. Both in line with my thoughts/hopes. We have been having a period of high heat and humidity.
I've been looking for some good directions for clearing the evaporator drain. I've seen one that uses a shop vac, but I don't that particular one will work with my rig, the ECU sits in he way of easy access and don't think the drain hose is installed in the same way. Can either of you point me in the right direction.
Gonna have to do it from underneath the car I think.