No you wouldn't if you've already been inhaling smoke and you're affected by the carbon dioxide, it doesn't take that long until you start getting weaker or loss of strength, it wouldn't take long until you're so weak that you're lucky to have the strength to carry yourself out, let alone two other people. But in this case I found it weird, the house really isn't that big and the living room where the girls were is basically just maybe 15 feet from the front door, smoke doesn't affect you THAT fast
EDIT: I forgot to consider that when adrenaline kicks in, well, one can do miraculous things then, and seeing as the MC loves and cares for both of the girls, well, lets just say that I can't help but to wonder why he wouldn't be able to save both of them. Unless of course right after he picks up one up, a beam or something would fall on the other one or something similar, so you really just don't have time to save but only one, or something like that. But who knows, it's pointless to jump the gun and speculate really, ANYTHING can happen, best to wait and see when the next episode is released, haha.