LOL! Well, if they're obviously Muslims, even excessive sweating seems to be pardoned. Not to mention invisibility.
I was in the airport in Atlanta a couple of years ago and there was a foreign-born Muslim (by his dress) with his family. There were a couple of small children who hovered around him.
And then there was their "mother" - a cloth-shrouded monstrosity (with the strange eye-screen on "her" burka) who was avoided by the children, was at least a foot taller than Daddy and had male ankles and wrists.
I doubt that "she" got checked.I wonder who they were smuggling in?