No, if directly related to this incident, this would not be TB. The onset was much too fast for that disease. As for throwing up
, that too would not be an immediate sign of infectious disease. Wet hair and face would also be unlikely from spitting and it is likely that a four year old might have been sprayed or doused with something and, lacking the vocabulary to describe it, called it “spitting.”
That, notwithstanding, his illness might or might not be related to what actually occurred.