Ac Stink

My truck stinks when I dont have the air on, when I have the windows down and and air filters through the truck. I think its starting to make me sick, I know that a little mold collects on the inside of the doors and I clean them regulary but it still stinks like mold. Any suggestions?

I'll give it a shot, But I tested this morning driving to work. with the windows rolled up and a/c off no stink. When I roll down the driver side window the stinks powers through the truck. I wiped down the inside of the doors with lysol hopefully that works. But I guess i may have to take the inside door panel off and clean it up. we'll see.