fresh cut grass

Would not having a constant flow of fresh air into the grow room negatively affect the plants? I run an a/c and I just don't want to pull hot air in my room if i don't need too. any advice would be great! thanks.

Note: There are countless threads all over the web about the ‘HAY / CUT GRASS SMELL’ when drying MARIJUANA. This one is designed specially for newbies who are probably having a melt down as they read this…. Firstly, STOP PANICKING and gather yourself. Chances are your MARIJUANA IS FINE…...