Why does she smell like nachos?

My niece Kaidyn, is about five and a half months old, and as I was apparently having minor brain aneurysms when my brother asked me, I watch her a few days a week.
That's right, a five and a half month old, a two year old and a one year old. Don't be surprised that we occasionally do see partridges in pear trees.
Now, I know all kinds of people do this every day. (They are called mothers of multiples, but hey, whatever)
But, I have not quite mastered the Hmmmm how do we say? Patience and balance to achieve all that I need to achieve while still caring for the brood.
Let's just say, some things slip through the cracks. This morning for example, (as a disclaimer, the entire morning up until this point went swimmingly, as a matter of fact, I wasn't the last person dropping off at Union Elementary this morning and we all had breakfast before we left.) I digress. We get home and I'm handing out snacks (Brady-goldfish, Leesy-tortilla chips) I bet you see what's coming.
NOW, I say before I even put my foot in the bathroom, 'Do not feed Kaidyn, she cannot eat what you eat yet'.
I go pee, less than forty seconds and I come back out. (I hold the speed peeing record, seriously) not noticing anything amiss, I start to unload the dishwasher when I hear little mini coughs. Also know, Kaidyn is a bit of a fake cougher, it's her claim to fame, really. But I check it out anyway, cuz well, who knows? Sure enough, she is contentedly gumming away at a tortilla chip. I start to freak out and then remember that well, honestly, freaking out does no-one any good, and I clean up the tortilla chip, take Leesy's snack away, lecture her again on not feeding her toothless cousin toothy type treats, which she ignores, because Lady and the Tramp 2 is on so the point?
Kaidyn still smells like Scoops chips and how am I going to explain why she smells like a Mexican restaurant, again?
The joys of babyhood.
Another proud family milestone? My son learned to say Poo-Poo last week, and every chance he gets cracks himself and his proud father up pointing to anything or anyone and saying it.
I'm getting a little teary just typing about it.
Have a great week! R