Sometimes when you're driving down a road, a bug hits your windshield. It's ugly and unpleasant, but you just activate the wipers / cleaning fluid and it's gone in a few seconds. It's just part of driving down the road. You don't dwell on it, because that'd be silly. Bugs aren't worth the time.
I'm wanting Chung to encounter that same Seedot that attacked him and Sandbite after he learns how to catch Pokemon with Yuuka and all... Also Chung is currently at Route 101 training with Sandbite.