I've got a question about Qting new geckos....

So before I got into Ball Pythons, I never knew about Quarantining other reptiles from your old collection, I never did that with the other four reptiles we have(we have 5,) and I didn't even quarantine my snake from my lizards because I thought you just had to quarantine them from other snakes.

*phew! That was a mouthful!*
But so far, they're all fine and stuff. But I want to get a couple new cresties. I'm just having issues about where to QT them.... Right now, all the reptiles but one beardy are in my room, though my sister's gecko(I'm keeping her for a little bit, just to see if I could get any noises from her or my other crestie) is normally in the kitchen and mine is normally right beside my computer desk.
My older sis's room has a bearded dragon in it, my younger sister's has two gerbils and a kitten I wouldn't dare let near my geckos.
So my question, if I kept Boga in my room, and QTned the two new geckos out here in the living room by my computer, would I be unable to hold my other reptiles while playing on the computer? Because often when I'm searching around on forums I'll either hold my snake, my beardie, or one or both of the geckos.
...
So I'm just a little confused. I want the best for my reptiles, especially considering if I got these two new geckos, they'd probably eventually be bred to one another.