Of course! But it's not for blowing on the leaves but rather for the roots. Keep your fan tilted down towards them instead of the leaves. Leaves can handle the heat; just ask any desert outdoor grower who has dealt with temps above the 1-teens! But it's important that the roots stay cool. Plus moving around the leaves/limbs creates more smell. The less the plants are shaken up the less odor to deal with...

And keep in mind all a fan does is move the air. If all you have is hot air then that's all that will be moved.