I live in Southern California Fontana and have a 2017 Honda Accord and this morning, while driving for a few minutes, decided to put on the AC. It ran well and got a little cold so I turned it off. about a minute later, I turned it on again and noticed that there was white smoke from the middle AC vent. I last only a few seconds but it was very noticeable. Thought it was a leak from the radiator or may be oil but no order. I turned it off for a while and turned it on again about 5 minutes later....no smoke or smell.....any Idea what took place?

Joe

 

Was it humid? This can be normal in humid conditions.