If you’re having trouble getting a permit to install an exhaust fan or you simply need to expel odors temporarily rather than all the time, you can use a regular fan to do it. Perhaps you simply experienced a mishap in the kitchen or you’re dealing with a visitor who smells like smoke. Simply use a table fan to suck up the air and blow it out an open door or window. If you point it in the right direction, you can achieve an exhaust-like performance.