No ventilation for the first 2 weeks

So i plan to start growing indoors for the first couple weeks and then moving the plants outdoors to finish the growing cycle. My only problem is there is no ventilation in my closet. Is there anything I can do or is it not too big of a deal since it's only the first 2 weeks? Sorry I'm new to this.

Just leave the closet door open.

What if I'm unable to leave the door open all the time since i'm trying to be stealth? should I atleast get a fan circulating some air in there?

either use a pc fan or a regular fan (at low) it should be okay. Also make sure theres some room for the plant to breath