Quarantine Question

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.

No need to keep making new parts of house for new QT areas. Have one dedicated area for all new arrivals. Once they been there for min 30 days and show no signs of illness then they can come out to collection

Yeah, but you see, I've never had a spot for QT ever, because I never knew about it before

I was just curious if they couldn't be in the same room as my others at /all/.

It's generally not recommend that you QT in the same room as your collection, BUT it can be done. As long as you are extra careful and keep them as far away from each other as possible then the only issues you truly need to worry about spreading are airborne diseases, but QTing in a different room won't truly protect your collection from those anyways.

Sorry, I haven't gotten to replying.

Maybe I should rephrase my question...
My current collection's in my rooom.
If I QT in the living room, could I take members from my preexisting collection into the living room?

They wouldn't come in contact with one another, and are there any certain airborne diseases that CGs can spread to one another that I should know about?
I only know that they may spread internal parasites to one another.