it's a good thing. more air is always good. the standard setup would be to have an intake and exhaust system, and also have an oscillating fan in the grow room: like mentioned above it brings more co2 to the plant, and it also has the effect of strengthening the plant: if you stress a plant by creating "wind" then it will react by becoming stronger

you have to make do with your situation though; there are always ideals

me, i may be able to work out a good intake but perhaps no exhaust. i'll certainly have an oscillating fan in my flower room; really, i should have an exhaust, but as long as temps stay ok, it will be alright; my flower room walls will be just plastic so that's better at letting heat out than solid walls

just monitor your stuff and make what adjustments you can to help the little guys; you can't plan it all from the start necessarily


but remember: air is good! as long as you don't have gail force winds blowing your plants down, more air is always good